【DATAGUARD】物理dg配置客戶端無縫切換--Fast-Start Failover的配置（2）

時間 2019-12-05

標籤 DATAGUARD 物理配置客戶端無縫切換 fast start failover 欄目負載均衡简体版

原文原文鏈接

【DATAGUARD】物理dg配置客戶端無縫切換--Fast-Start Failover的配置sql

一.2.2 實驗環境介紹

項目數據庫	主庫session	dg庫oracle
db 類型app	單實例async	單實例性能
db version測試	11.2.0.3ui	11.2.0.3spa
db 存儲	FS type	FS type
ORACLE_SID	oradg11g	oradgphy
db_name	oradg11g	oradg11g
主機IP地址：	192.168.59.130	192.168.59.130
OS版本及kernel版本	RHEL6.5 64位，2.6.32-504.16.2.el6.x86_64	RHEL6.5 64位，2.6.32-504.16.2.el6.x86_64
OS hostname	rhel6_lhr	rhel6_lhr

一.3 相關知識點掃盲

Fast-Start Failover是創建在broker基礎上的一個快速故障轉換的機制，經過fast-start failover能夠自動檢測primary的故障，而後自動的failover到預先指定的standby上面，這樣能夠最大化的減小故障時間，提升數據庫的可用性。

Fast-Start Failover是在broker的基礎上再增長了一個單獨的observer，用來監控primary和standby數據庫的狀態，一旦primary不可用，observer就會自動的切換到指定的standby上面。

FAST-START FAILOVER是ORACLE10G的一項新功能。這個功能能夠實現當主庫宕機時，預約的從庫自動快速可靠地進行失敗切換(FAILOVER)。切換完成以後，原來的主庫恢復正常以後，將會自動地配置爲從庫。這的確是一項令DBA心動的功能，大大減小了DBA的維護和管理工做。尤爲是減小了在出現忽然問題時的心慌意亂和手忙腳亂。

一.4 實驗部分

一.4.1 實驗目標

Fast-Start Failover 配置並完成實驗。

一.4.2 前提準備條件

一.4.2.1 primary 與 standby 啓用flashback database

在主備庫上開啓閃回功能，不然後續報錯16651 ：

[oracle@rhel6_lhr lhr]$ oerr ora 16651

16651, 0000, "requirements not met for enabling fast-start failover"

// *Cause: The attempt to enable fast-start failover could not be completed

// because one or more requirements were not met:

// - The Data Guard configuration must be in either MaxAvailability

// or MaxPerformance protection mode.

// - The LogXptMode property for both the primary database and

// the fast-start failover target standby database must be

// set to SYNC if the configuration protection mode is set to

// MaxAvailability mode.

// - The LogXptMode property for both the primary database and

// the fast-start failover target standby database must be

// set to ASYNC if the configuration protection mode is set to

// MaxPerformance mode.

// - The primary database and the fast-start failover target standby

// database must both have flashback enabled.

// - No valid target standby database was specified in the primary

// database FastStartFailoverTarget property prior to the attempt

// to enable fast-start failover, and more than one standby

// database exists in the Data Guard configuration.

// *Action: Retry the command after correcting the issue:

// - Set the Data Guard configuration to either MaxAvailability

// or MaxPerformance protection mode.

// - Ensure that the LogXptMode property for both the primary

// database and the fast-start failover target standby database

// are set to SYNC if the configuration protection mode is set to

// MaxAvailability.

// - Ensure that the LogXptMode property for both the primary

// database and the fast-start failover target standby database

// are set to ASYNC if the configuration protection mode is set to

// MaxPerformance.

// - Ensure that both the primary database and the fast-start failover

// target standby database have flashback enabled.

// - Set the primary database FastStartFailoverTarget property to

// the DB_UNIQUE_NAME value of the desired target standby database

// and the desired target standby database FastStartFailoverTarget

// property to the DB_UNIQUE_NAME value of the primary database.

主庫：

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 09:50:17 2015

鏈接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

09:50:17 SQL> set line 9999

09:50:18 SQL> col name format a10

col FS_FAILOVER_OBSERVER_HOST format a20

09:50:18 SQL> col DB_UNIQUE_NAME format a10

09:50:18 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_ CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- ---------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradg11g 2544025 MAXIMUM PERFORMANCE MAXIMUM PERFORMANCE PRIMARY YES READ WRITE TO STANDBY

已用時間: 00: 00: 00.01

09:50:18 SQL> SELECT d.DBID,

09:50:18 2 d.DB_UNIQUE_NAME,

09:50:18 3 d.FORCE_LOGGING,

09:50:18 4 d.FLASHBACK_ON,

09:50:18 5 d.FS_FAILOVER_STATUS,

09:50:18 6 d.FS_FAILOVER_CURRENT_TARGET,

09:50:18 7 d.FS_FAILOVER_THRESHOLD,

09:50:18 8 d.FS_FAILOVER_OBSERVER_PRESENT,

09:50:18 9 d.FS_FAILOVER_OBSERVER_HOST

09:50:18 10 FROM v$database d;

DBID DB_UNIQUE_ FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- ---------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradg11g YES YES DISABLED 0

已用時間: 00: 00: 00.01

09:50:24 SQL>

備庫：

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 10:18:39 2015

鏈接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

10:18:39 SQL> set line 9999

10:19:02 SQL> col name format a10

10:19:02 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

10:19:02 SQL> col DB_UNIQUE_NAME format a15

10:19:02 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

SELECT d.DBID,

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradgphy 2545958 MAXIMUM PERFORMANCE MAXIMUM PERFORMANCE PHYSICAL STANDBY YES READ ONLY WITH APPLY NOT ALLOWED

已用時間: 00: 00: 00.00

10:19:02 SQL> 10:19:02 2 d.DB_UNIQUE_NAME,

10:19:02 3 d.FORCE_LOGGING,

10:19:02 4 d.FLASHBACK_ON,

10:19:02 5 d.FS_FAILOVER_STATUS,

10:19:02 6 d.FS_FAILOVER_CURRENT_TARGET,

10:19:02 7 d.FS_FAILOVER_THRESHOLD,

10:19:02 8 d.FS_FAILOVER_OBSERVER_PRESENT,

10:19:02 9 d.FS_FAILOVER_OBSERVER_HOST

10:19:02 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradgphy YES NO DISABLED 0

已用時間: 00: 00: 00.00

10:19:02 SQL> alter database flashback on;

alter database flashback on

第 1 行出現錯誤:

ORA-01153: 激活了不兼容的介質恢復

已用時間: 00: 00: 00.00

10:19:18 SQL> alter database recover managed standby database cancel;

數據庫已更改。

已用時間: 00: 00: 01.01

10:19:34 SQL> alter database flashback on;

數據庫已更改。

已用時間: 00: 00: 01.40

10:19:38 SQL> set line 9999

10:19:53 SQL> col name format a10

10:19:53 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

10:19:53 SQL> col DB_UNIQUE_NAME format a15

10:19:53 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradgphy 2545994 MAXIMUM PERFORMANCE MAXIMUM PERFORMANCE PHYSICAL STANDBY YES READ ONLY NOT ALLOWED

已用時間: 00: 00: 00.00

10:19:53 SQL> SELECT d.DBID,

10:19:53 2 d.DB_UNIQUE_NAME,

10:19:53 3 d.FORCE_LOGGING,

10:19:53 4 d.FLASHBACK_ON,

10:19:53 5 d.FS_FAILOVER_STATUS,

10:19:53 6 d.FS_FAILOVER_CURRENT_TARGET,

10:19:53 7 d.FS_FAILOVER_THRESHOLD,

10:19:53 8 d.FS_FAILOVER_OBSERVER_PRESENT,

10:19:53 9 d.FS_FAILOVER_OBSERVER_HOST

10:19:53 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradgphy YES YES DISABLED 0

已用時間: 00: 00: 00.00

10:19:53 SQL>

一.4.2.2 確保broker配置爲運行在MAX Availability模式

確保broker已經配置，同時運行模式爲最大可用模式或者最大性能模式，若是數據庫運行模式爲最大可用模式，確保參數LogXptMode 配置爲SYNC，若是是最大性能模式，則參數LogXptMode 應該爲ASYNC

[oracle@rhel6_lhr ~]$ dgmgrl sys/lhr@tns_oradg11g_dgmgrl

DGMGRL for Linux: Version 11.2.0.3.0 - 64bit Production

歡迎使用 DGMGRL, 要獲取有關信息請鍵入 "help"。

已鏈接。

DGMGRL> show configuration

配置 - fsf_oradg11g_lhr

保護模式: MaxPerformance

數據庫:

oradg11g - 主數據庫

oradgphy - 物理備用數據庫

快速啓動故障轉移: DISABLED

配置狀態:

SUCCESS

DGMGRL> show resource verbose 'oradg11g' logxptmode on site 'oradg11g';

LogXptMode = 'ASYNC'

DGMGRL> show resource verbose 'oradgphy' logxptmode on site 'oradgphy';

LogXptMode = 'ASYNC'

DGMGRL> alter resource 'oradg11g' set property logxptmode='SYNC';

已更新屬性 "logxptmode"

DGMGRL> alter resource 'oradgphy' set property logxptmode='SYNC';

已更新屬性 "logxptmode"

DGMGRL> edit configuration set protection mode as maxavailability;

成功。

DGMGRL> show configuration

配置 - fsf_oradg11g_lhr

保護模式: MaxAvailability

數據庫:

oradg11g - 主數據庫

oradgphy - 物理備用數據庫

快速啓動故障轉移: DISABLED

配置狀態:

SUCCESS

DGMGRL> show resource verbose 'oradg11g' logxptmode on site 'oradg11g';

LogXptMode = 'SYNC'

DGMGRL> show resource verbose 'oradgphy' logxptmode on site 'oradgphy';

LogXptMode = 'SYNC'

DGMGRL>

主庫告警日誌：

Tue Sep 29 10:31:27 2015

ALTER SYSTEM SET log_archive_dest_2='service="tns_oradgphy_dgmgrl"','LGWR SYNC AFFIRM delay=0 optional compression=disable max_failure=0 max_connections=1 reopen=300 db_unique_name="oradgphy" net_timeout=30','valid_for=(all_logfiles,primary_role)' SCOPE=BOTH;

ALTER SYSTEM SWITCH ALL LOGFILE start (oradg11g)

Tue Sep 29 10:31:27 2015

Destination LOG_ARCHIVE_DEST_2 is SYNCHRONIZED

Tue Sep 29 10:31:27 2015

NSS2 started with pid=37, OS id=46913

LGWR: Standby redo logfile selected for thread 1 sequence 160 for destination LOG_ARCHIVE_DEST_2

ALTER SYSTEM SWITCH ALL LOGFILE complete (oradg11g)

Thread 1 advanced to log sequence 160 (LGWR switch)

Current log# 2 seq# 160 mem# 0: /u01/app/oracle/oradata/oradg11g/redo02.log

Tue Sep 29 10:31:30 2015

Archived Log entry 522 added for thread 1 sequence 159 ID 0x5495fd70 dest 1:

Tue Sep 29 10:31:31 2015

ARC3: Archive log rejected (thread 1 sequence 159) at host 'tns_oradgphy_dgmgrl'

FAL[server, ARC3]: FAL archive failed, see trace file.

ARCH: FAL archive failed. Archiver continuing

ORACLE Instance oradg11g - Archival Error. Archiver continuing.

Tue Sep 29 10:31:44 2015

ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE AVAILABILITY

Completed: ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE AVAILABILITY

ALTER SYSTEM ARCHIVE LOG

Tue Sep 29 10:31:45 2015

******************************************************************

LGWR: Setting 'active' archival for destination LOG_ARCHIVE_DEST_2

******************************************************************

LGWR: Standby redo logfile selected to archive thread 1 sequence 161

LGWR: Standby redo logfile selected for thread 1 sequence 161 for destination LOG_ARCHIVE_DEST_2

Thread 1 advanced to log sequence 161 (LGWR switch)

Current log# 3 seq# 161 mem# 0: /u01/app/oracle/oradata/oradg11g/redo03.log

Archived Log entry 525 added for thread 1 sequence 160 ID 0x5495fd70 dest 1:

備庫告警日誌：

Tue Sep 29 10:31:30 2015

Primary database is in MAXIMUM PERFORMANCE mode

RFS[4]: Assigned to RFS process 46919

RFS[4]: Selected log 5 for thread 1 sequence 160 dbid 1403587593 branch 886695024

Tue Sep 29 10:31:30 2015

Archived Log entry 148 added for thread 1 sequence 159 ID 0x5495fd70 dest 1:

Tue Sep 29 10:31:31 2015

Media Recovery Waiting for thread 1 sequence 160 (in transit)

Recovery of Online Redo Log: Thread 1 Group 5 Seq 160 Reading mem 0

Mem# 0: /u01/app/oracle/oradata/oradgphy/standby_redo05.log

Tue Sep 29 10:31:44 2015

Archived Log entry 149 added for thread 1 sequence 160 ID 0x5495fd70 dest 1:

Tue Sep 29 10:31:44 2015

Media Recovery Waiting for thread 1 sequence 161

Tue Sep 29 10:31:45 2015

Primary database is in MAXIMUM AVAILABILITY mode

Changing standby controlfile to MAXIMUM AVAILABILITY mode

Standby controlfile consistent with primary

RFS[5]: Assigned to RFS process 46931

RFS[5]: Selected log 4 for thread 1 sequence 161 dbid 1403587593 branch 886695024

Recovery of Online Redo Log: Thread 1 Group 4 Seq 161 Reading mem 0

Mem# 0: /u01/app/oracle/oradata/oradgphy/standby_redo04.log

---從數據庫層次查看配置狀況是否修改：

主庫：

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 10:43:18 2015

鏈接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

10:43:18 SQL> show parameter log_archive_dest_2

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

log_archive_dest_2 string service="tns_oradgphy_dgmgrl",

LGWR SYNC AFFIRM delay=0 opti

onal compression=disable max_f

ailure=0 max_connections=1 reo

pen=300 db_unique_name="oradgp

hy" net_timeout=30, valid_for=

(all_logfiles,primary_role)

log_archive_dest_20 string

log_archive_dest_21 string

log_archive_dest_22 string

log_archive_dest_23 string

log_archive_dest_24 string

log_archive_dest_25 string

log_archive_dest_26 string

log_archive_dest_27 string

log_archive_dest_28 string

log_archive_dest_29 string

10:43:20 SQL> set line 9999

10:43:30 SQL> col name format a10

10:43:30 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

10:43:30 SQL> col DB_UNIQUE_NAME format a15

10:43:30 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradg11g 2547638 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PRIMARY YES READ WRITE TO STANDBY

已用時間: 00: 00: 00.00

10:43:30 SQL> SELECT d.DBID,

10:43:30 2 d.DB_UNIQUE_NAME,

10:43:30 3 d.FORCE_LOGGING,

10:43:30 4 d.FLASHBACK_ON,

10:43:30 5 d.FS_FAILOVER_STATUS,

10:43:30 6 d.FS_FAILOVER_CURRENT_TARGET,

10:43:30 7 d.FS_FAILOVER_THRESHOLD,

10:43:30 8 d.FS_FAILOVER_OBSERVER_PRESENT,

10:43:30 9 d.FS_FAILOVER_OBSERVER_HOST

10:43:30 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradg11g YES YES DISABLED 0

已用時間: 00: 00: 00.01

10:43:30 SQL>

備庫：

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 10:43:53 2015

鏈接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

10:43:53 SQL> show parameter log_archive_dest_2

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

log_archive_dest_2 string service="tns_oradg11g_dgmgrl",

LGWR ASYNC NOAFFIRM delay=0 o

ptional compression=disable ma

x_failure=0 max_connections=1

reopen=300 db_unique_name="ora

dg11g" net_timeout=30, valid_f

or=(all_logfiles,primary_role)

log_archive_dest_20 string

log_archive_dest_21 string

log_archive_dest_22 string

log_archive_dest_23 string

log_archive_dest_24 string

log_archive_dest_25 string

log_archive_dest_26 string

log_archive_dest_27 string

log_archive_dest_28 string

log_archive_dest_29 string

10:43:54 SQL> set line 9999

10:44:01 SQL> col name format a10

10:44:01 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

10:44:01 SQL> col DB_UNIQUE_NAME format a15

10:44:01 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradgphy 2547673 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PHYSICAL STANDBY YES READ ONLY WITH APPLY NOT ALLOWED

已用時間: 00: 00: 00.00

10:44:01 SQL> SELECT d.DBID,

10:44:01 2 d.DB_UNIQUE_NAME,

10:44:01 3 d.FORCE_LOGGING,

10:44:01 4 d.FLASHBACK_ON,

10:44:01 5 d.FS_FAILOVER_STATUS,

10:44:01 6 d.FS_FAILOVER_CURRENT_TARGET,

10:44:01 7 d.FS_FAILOVER_THRESHOLD,

10:44:01 8 d.FS_FAILOVER_OBSERVER_PRESENT,

10:44:01 9 d.FS_FAILOVER_OBSERVER_HOST

10:44:01 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradgphy YES YES DISABLED 0

已用時間: 00: 00: 00.00

10:44:01 SQL>

一.4.3 啓動observer觀察 進程

選定第三臺機器，安裝DGMGRL，用於啓動observer，這裏命令爲observer server，配置observer server的配置tnsnames.ora文件，保證observer能正常鏈接到 primary 和 standby 數據庫，咱們測試就使用同一臺機器測試。

新開一個單獨的窗口：

[oracle@rhel6_lhr lhr]$ dgmgrl sys/lhr@tns_oradg11g_dgmgrl "start observer"

DGMGRL for Linux: Version 11.2.0.3.0 - 64bit Production

歡迎使用 DGMGRL, 要獲取有關信息請鍵入 "help"。

已鏈接。

觀察程序已啓動

該窗口一直掛起。。。。
注意啓動observer後，DGMGRL就會阻塞在這個命令上。observer的操做信息之後會在這個窗口顯示， 有啓動就有關閉，以下：

[oracle@rhel6_lhr ~]$ dgmgrl sys/lhr@tns_oradgphy_dgmgrl "stop observer"

DGMGRL for Linux: Version 11.2.0.3.0 - 64bit Production

歡迎使用 DGMGRL, 要獲取有關信息請鍵入 "help" 。

已鏈接。

完成。

[oracle@rhel6_lhr ~]$ dgmgrl sys/lhr@tns_oradgphy_dgmgrl "start observer"

DGMGRL for Linux: Version 11.2.0.3.0 - 64bit Production

歡迎使用 DGMGRL, 要獲取有關信息請鍵入 "help" 。

已鏈接。

觀察程序已啓動

一.4.4 配置FastStartFailover

一.4.4.1 配置每一個數據庫Failover的目標。這一步是決定當數據庫出問題後會自動failover目標

DGMGRL> edit database 'oradg11g' set property 'FastStartFailoverTarget'='oradgphy';

已更新屬性 "FastStartFailoverTarget"

DGMGRL>

DGMGRL> edit database 'oradgphy' set property 'FastStartFailoverTarget'='oradg11g';

已更新屬性 "FastStartFailoverTarget"

一.4.4.2 設定FastStartFailoverThreshold值

這個設置是決定了primary壞了多長時間以後會執行自動的failover操做。這裏設置的是 30s

DGMGRL> edit configuration set property FastStartFailoverThreshold=30;

已更新屬性 "faststartfailoverthreshold"

一.4.4.3 啓用Fast-Start Failover

DGMGRL> ENABLE FAST_START FAILOVER;

已啓用。

DGMGRL> SHOW FAST_START FAILOVER;

快速啓動故障轉移: ENABLED

閾值: 30 秒

目標: oradgphy

觀察程序: rhel6_lhr

滯後限制: 30 秒 (未使用)

關閉主數據庫: TRUE

自動恢復: TRUE

可配置的故障轉移條件

健康情況:

Corrupted Controlfile YES

Corrupted Dictionary YES

Inaccessible Logfile NO

Stuck Archiver NO

Datafile Offline YES

Oracle 錯誤條件:

(無)

DGMGRL>

主庫告警日誌：

Tue Sep 29 11:09:03 2015

Fast-Start Failover (FSFO) has been enabled between:

Primary = "oradg11g"

Standby = "oradgphy"

Tue Sep 29 11:09:03 2015

FSFP started with pid=42, OS id=49349

從告警日誌能夠看出，主庫上啓動了一個進程fsfp 的進程：

[oracle@rhel6_lhr ~]$ ps -ef|grep fsfp

oracle 49349 1 0 11:09 ? 00:00:00 ora_fsfp_oradg11g

oracle 49383 43618 0 11:09 pts/1 00:00:00 grep fsfp

[oracle@rhel6_lhr ~]$

[oracle@rhel6_lhr ~]$ dgmgrl sys/lhr@tns_oradg11g_dgmgrl

DGMGRL for Linux: Version 11.2.0.3.0 - 64bit Production

歡迎使用 DGMGRL, 要獲取有關信息請鍵入 "help"。

已鏈接。

DGMGRL> show configuration verbose

配置 - fsf_oradg11g_lhr

保護模式: MaxAvailability

數據庫:

oradg11g - 主數據庫

oradgphy - (*) 物理備用數據庫

(*) 快速啓動故障轉移目標

屬性:

FastStartFailoverThreshold = '30'

OperationTimeout = '30'

FastStartFailoverLagLimit = '30'

CommunicationTimeout = '180'

FastStartFailoverAutoReinstate = 'TRUE'

FastStartFailoverPmyShutdown = 'TRUE'

BystandersFollowRoleChange = 'ALL'

快速啓動故障轉移: ENABLED

閾值: 30 秒

目標: oradgphy

觀察程序: rhel6_lhr

滯後限制: 30 秒 (未使用)

關閉主數據庫: TRUE

自動恢復: TRUE

配置狀態:

SUCCESS

DGMGRL>

數據庫級別查看，主庫：

11:11:56 SQL> set line 9999

11:12:06 SQL> col name format a10

11:12:06 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

11:12:06 SQL> col DB_UNIQUE_NAME format a15

11:12:06 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradg11g 2549890 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PRIMARY YES READ WRITE TO STANDBY

已用時間: 00: 00: 00.00

11:12:06 SQL> SELECT d.DBID,

11:12:06 2 d.DB_UNIQUE_NAME,

11:12:06 3 d.FORCE_LOGGING,

11:12:06 4 d.FLASHBACK_ON,

11:12:06 5 d.FS_FAILOVER_STATUS,

11:12:06 6 d.FS_FAILOVER_CURRENT_TARGET,

11:12:06 7 d.FS_FAILOVER_THRESHOLD,

11:12:06 8 d.FS_FAILOVER_OBSERVER_PRESENT,

11:12:06 9 d.FS_FAILOVER_OBSERVER_HOST

11:12:06 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradg11g YES YES SYNCHRONIZED oradgphy 30 YES rhel6_lhr

已用時間: 00: 00: 00.00

11:12:06 SQL>

備庫：

11:11:29 SQL> set line 9999

11:12:13 SQL> col name format a10

11:12:13 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

11:12:13 SQL> col DB_UNIQUE_NAME format a15

11:12:13 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradgphy 2549900 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PHYSICAL STANDBY YES READ ONLY WITH APPLY NOT ALLOWED

已用時間: 00: 00: 00.00

11:12:13 SQL> SELECT d.DBID,

11:12:13 2 d.DB_UNIQUE_NAME,

11:12:13 3 d.FORCE_LOGGING,

11:12:13 4 d.FLASHBACK_ON,

11:12:13 5 d.FS_FAILOVER_STATUS,

11:12:13 6 d.FS_FAILOVER_CURRENT_TARGET,

11:12:13 7 d.FS_FAILOVER_THRESHOLD,

11:12:14 8 d.FS_FAILOVER_OBSERVER_PRESENT,

11:12:14 9 d.FS_FAILOVER_OBSERVER_HOST

11:12:14 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradgphy YES YES SYNCHRONIZED oradgphy 30 YES rhel6_lhr

已用時間: 00: 00: 00.01

11:12:14 SQL>

一.4.5 測試Fast-Start Failover 的功能

一.4.5.1 Shutdown abort 主庫

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 11:18:18 2015

鏈接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

11:18:18 SQL> set line 9999

11:18:19 SQL> col name format a10

11:18:19 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

11:18:19 SQL> col DB_UNIQUE_NAME format a15

11:18:19 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradg11g 2550295 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PRIMARY YES READ WRITE TO STANDBY

已用時間: 00: 00: 00.00

11:18:19 SQL> SELECT d.DBID,

11:18:20 2 d.DB_UNIQUE_NAME,

11:18:20 3 d.FORCE_LOGGING,

11:18:20 4 d.FLASHBACK_ON,

11:18:20 5 d.FS_FAILOVER_STATUS,

11:18:20 6 d.FS_FAILOVER_CURRENT_TARGET,

11:18:20 7 d.FS_FAILOVER_THRESHOLD,

11:18:20 8 d.FS_FAILOVER_OBSERVER_PRESENT,

11:18:20 9 d.FS_FAILOVER_OBSERVER_HOST

11:18:20 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradg11g YES YES SYNCHRONIZED oradgphy 30 YES rhel6_lhr

已用時間: 00: 00: 00.00

11:18:20 SQL> shutdown abort;

ORACLE 例程已經關閉。

11:18:27 SQL>

一.4.5.2 查看告警日誌及server窗口

11:18:58.99 2015年9月29 日星期二

正在爲數據庫 "oradgphy" 啓動快速啓動故障轉移 ...

當即執行故障轉移, 請稍候 ...

故障轉移成功, 新的主數據庫爲 "oradgphy"

11:19:04.72 2015年9月29 日星期二

[oracle@rhel6_lhr ~]$ dgmgrl sys/lhr@tns_oradgphy_dgmgrl

DGMGRL for Linux: Version 11.2.0.3.0 - 64bit Production

歡迎使用 DGMGRL, 要獲取有關信息請鍵入 "help"。

已鏈接。

DGMGRL> show configuration verbose

配置 - fsf_oradg11g_lhr

保護模式: MaxAvailability

數據庫:

oradgphy - 主數據庫

警告: ORA-16817: 快速啓動故障轉移配置不一樣步

oradg11g - (*) 物理備用數據庫 (禁用)

ORA-16661: 須要恢復備用數據庫

(*) 快速啓動故障轉移目標

屬性:

FastStartFailoverThreshold = '30'

OperationTimeout = '30'

FastStartFailoverLagLimit = '30'

CommunicationTimeout = '180'

FastStartFailoverAutoReinstate = 'TRUE'

FastStartFailoverPmyShutdown = 'TRUE'

BystandersFollowRoleChange = 'ALL'

快速啓動故障轉移: ENABLED

閾值: 30 秒

目標: oradg11g

觀察程序: rhel6_lhr

滯後限制: 30 秒 (未使用)

關閉主數據庫: TRUE

自動恢復: TRUE

配置狀態:

WARNING

DGMGRL>

備庫告警日誌：

Tue Sep 29 11:18:26 2015

RFS[5]: Possible network disconnect with primary database

Tue Sep 29 11:18:26 2015

RFS[6]: Assigned to RFS process 46955

RFS[6]: Possible network disconnect with primary database

Tue Sep 29 11:18:26 2015

RFS[7]: Assigned to RFS process 46921

RFS[7]: Possible network disconnect with primary database

Tue Sep 29 11:18:58 2015

Attempting Fast-Start Failover because the threshold of 30 seconds has elapsed.

Tue Sep 29 11:18:59 2015

Data Guard Broker: Beginning failover

Tue Sep 29 11:18:59 2015

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL

Tue Sep 29 11:18:59 2015

MRP0: Background Media Recovery cancelled with status 16037

Errors in file /u01/app/oracle/diag/rdbms/oradgphy/oradgphy/trace/oradgphy_pr00_46860.trc:

ORA-16037: user requested cancel of managed recovery operation

Managed Standby Recovery not using Real Time Apply

Recovery interrupted!

Recovered data files to a consistent state at change 2550301

Tue Sep 29 11:18:59 2015

MRP0: Background Media Recovery process shutdown (oradgphy)

Managed Standby Recovery Canceled (oradgphy)

Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH FORCE

Attempt to do a Terminal Recovery (oradgphy)

Media Recovery Start: Managed Standby Recovery (oradgphy)

started logmerger process

Tue Sep 29 11:19:00 2015

Managed Standby Recovery not using Real Time Apply

Parallel Media Recovery started with 2 slaves

Begin: Standby Redo Logfile archival

End: Standby Redo Logfile archival

Terminal Recovery timestamp is '09/29/2015 11:19:00'

Terminal Recovery: applying standby redo logs.

Terminal Recovery: thread 1 seq# 163 redo required

Terminal Recovery:

Recovery of Online Redo Log: Thread 1 Group 4 Seq 163 Reading mem 0

Mem# 0: /u01/app/oracle/oradata/oradgphy/standby_redo04.log

Identified End-Of-Redo (failover) for thread 1 sequence 163 at SCN 0xffff.ffffffff

Incomplete Recovery applied until change 2550302 time 09/29/2015 11:18:25

Media Recovery Complete (oradgphy)

Terminal Recovery: successful completion

Tue Sep 29 11:19:00 2015

ARCH: Archival stopped, error occurred. Will continue retrying

ORACLE Instance oradgphy - Archival Error

ORA-16014: log 4 sequence# 163 not archived, no available destinations

ORA-00312: online log 4 thread 1: '/u01/app/oracle/oradata/oradgphy/standby_redo04.log'

Forcing ARSCN to IRSCN for TR 0:2550302

Attempt to set limbo arscn 0:2550302 irscn 0:2550302

Resetting standby activation ID 1419115888 (0x5495fd70)

Completed: ALTER DATABASE RECOVER MANAGED STANDBY DATABASE FINISH FORCE

ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY WAIT WITH SESSION SHUTDOWN

ALTER DATABASE SWITCHOVER TO PRIMARY (oradgphy)

Maximum wait for role transition is 15 minutes.

All dispatchers and shared servers shutdown

CLOSE: killing server sessions.

Active process 47845 user 'oracle' program 'oracle@rhel6_lhr (TNS V1-V3)'

CLOSE: all sessions shutdown successfully.

Tue Sep 29 11:19:03 2015

SMON: disabling cache recovery

Backup controlfile written to trace file /u01/app/oracle/diag/rdbms/oradgphy/oradgphy/trace/oradgphy_rsm0_45481.trc

Standby terminal recovery start SCN: 2550301

RESETLOGS after incomplete recovery UNTIL CHANGE 2550302

Online log /u01/app/oracle/oradata/oradgphy/redo01.log: Thread 1 Group 1 was previously cleared

Online log /u01/app/oracle/oradata/oradgphy/redo02.log: Thread 1 Group 2 was previously cleared

Online log /u01/app/oracle/oradata/oradgphy/redo03.log: Thread 1 Group 3 was previously cleared

Standby became primary SCN: 2550300

Tue Sep 29 11:19:03 2015

Setting recovery target incarnation to 5

AUDIT_TRAIL initialization parameter is changed back to its original value as specified in the parameter file.

Switchover: Complete - Database mounted as primary

Completed: ALTER DATABASE COMMIT TO SWITCHOVER TO PRIMARY WAIT WITH SESSION SHUTDOWN

ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE AVAILABILITY

Completed: ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE AVAILABILITY

ALTER DATABASE OPEN

Data Guard Broker initializing...

Tue Sep 29 11:19:03 2015

Assigning activation ID 1419206889 (0x549760e9)

LGWR: Primary database is in MAXIMUM AVAILABILITY mode

LGWR: Destination LOG_ARCHIVE_DEST_2 is using asynchronous network I/O

LGWR: Destination LOG_ARCHIVE_DEST_1 is not serviced by LGWR

Thread 1 advanced to log sequence 2 (thread open)

Tue Sep 29 11:19:03 2015

ARC3: Becoming the 'no SRL' ARCH

ARC0: Becoming the 'no SRL' ARCH

ARC3: LGWR is scheduled to archive destination LOG_ARCHIVE_DEST_2 after log switch

Thread 1 opened at log sequence 2

Current log# 2 seq# 2 mem# 0: /u01/app/oracle/oradata/oradgphy/redo02.log

Successful open of redo thread 1

MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set

SMON: enabling cache recovery

Tue Sep 29 11:19:03 2015

NSA2 started with pid=17, OS id=49982

Error 1034 received logging on to the standby

ARC3: Error 1034 Creating archive log file to 'tns_oradg11g_dgmgrl'

Archived Log entry 152 added for thread 1 sequence 1 ID 0x549760e9 dest 1:

Archiver process freed from errors. No longer stopped

Tue Sep 29 11:19:03 2015

Error 1034 received logging on to the standby

PING[ARC2]: Heartbeat failed to connect to standby 'tns_oradg11g_dgmgrl'. Error is 1034.

[45481] Successfully onlined Undo Tablespace 2.

Undo initialization finished serial:0 start:44509384 end:44509514 diff:130 (1 seconds)

Dictionary check beginning

Dictionary check complete

Verifying file header compatibility for 11g tablespace encryption..

Verifying 11g file header compatibility for tablespace encryption completed

SMON: enabling tx recovery

Database Characterset is ZHS16GBK

Starting background process SMCO

Tue Sep 29 11:19:04 2015

SMCO started with pid=18, OS id=49996

No Resource Manager plan active

Starting background process QMNC

Tue Sep 29 11:19:04 2015

QMNC started with pid=20, OS id=49998

LOGSTDBY: Validating controlfile with logical metadata

LOGSTDBY: Validation complete

Completed: ALTER DATABASE OPEN

ALTER SYSTEM SET log_archive_trace=0 SCOPE=BOTH SID='oradgphy';

ALTER SYSTEM SET log_archive_format='%t_%s_%r.dbf' SCOPE=SPFILE SID='oradgphy';

ALTER SYSTEM SET standby_file_management='AUTO' SCOPE=BOTH SID='*';

ALTER SYSTEM SET archive_lag_target=0 SCOPE=BOTH SID='*';

ALTER SYSTEM SET log_archive_max_processes=4 SCOPE=BOTH SID='*';

ALTER SYSTEM SET log_archive_min_succeed_dest=1 SCOPE=BOTH SID='*';

ALTER SYSTEM SET db_file_name_convert='oradg11g','oradgphy' SCOPE=SPFILE;

ALTER SYSTEM SET log_file_name_convert='oradg11g','oradgphy' SCOPE=SPFILE;

ALTER SYSTEM SET log_archive_dest_state_2='RESET' SCOPE=BOTH;

Failover succeeded. Primary database is now oradgphy.

Tue Sep 29 11:19:04 2015

idle dispatcher 'D000' terminated, pid = (17, 1)

Starting background process CJQ0

Tue Sep 29 11:19:04 2015

CJQ0 started with pid=34, OS id=50027

Thread 1 advanced to log sequence 3 (LGWR switch)

Current log# 3 seq# 3 mem# 0: /u01/app/oracle/oradata/oradgphy/redo03.log

ARC3: STARTING ARCH PROCESSES

Tue Sep 29 11:19:06 2015

ARC4 started with pid=26, OS id=50033

Tue Sep 29 11:19:07 2015

FSFP started with pid=35, OS id=50037

ARC4: Archival started

ARC3: STARTING ARCH PROCESSES COMPLETE

ARC3: Becoming the 'no SRL' ARCH

krsk_srl_archive_int: Enabling archival of deferred physical standby SRLs

Archived Log entry 153 added for thread 1 sequence 2 ID 0x549760e9 dest 1:

Archived Log entry 154 added for thread 1 sequence 163 ID 0x5495fd70 dest 1:

Shutting down archive processes

ARCH shutting down

ARC4: Archival stopped

Tue Sep 29 11:21:44 2015

ARC0: Becoming the 'no SRL' ARCH

Tue Sep 29 11:21:45 2015

ARC1: Becoming the 'no SRL' ARCH

一.4.5.3 在sqlplus手動啓動原主庫到mount狀態，並觀察dgmgrl的server狀態

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 11:22:55 2015

已鏈接到空閒例程。

11:22:55 SQL> startup mount;

ORACLE 例程已經啓動。

Total System Global Area 417546240 bytes

Fixed Size 2228944 bytes

Variable Size 385879344 bytes

Database Buffers 20971520 bytes

Redo Buffers 8466432 bytes

數據庫裝載完畢。

Server 窗口：

11:24:55.93 2015年9月29日星期二

正在爲數據庫 "oradg11g" 啓動恢復過程...

正在恢復數據庫 "oradg11g", 請稍候...

操做要求關閉實例 "oradg11g" (在數據庫 "oradg11g" 上)

正在關閉實例 "oradg11g"...

ORA-01109: 數據庫未打開

已經卸載數據庫。

ORACLE 例程已經關閉。

操做要求啓動實例 "oradg11g" (在數據庫 "oradg11g" 上)

正在啓動實例 "oradg11g"...

ORACLE 例程已經啓動。

數據庫裝載完畢。

繼續恢復數據庫 "oradg11g"...

已成功恢復數據庫 "oradg11g"

11:26:03.30 2015年9月29日星期二

DGMGRL> show configuration verbose

配置 - fsf_oradg11g_lhr

保護模式: MaxAvailability

數據庫:

oradgphy - 主數據庫

oradg11g - (*) 物理備用數據庫

(*) 快速啓動故障轉移目標

屬性:

FastStartFailoverThreshold = '30'

OperationTimeout = '30'

FastStartFailoverLagLimit = '30'

CommunicationTimeout = '180'

FastStartFailoverAutoReinstate = 'TRUE'

FastStartFailoverPmyShutdown = 'TRUE'

BystandersFollowRoleChange = 'ALL'

快速啓動故障轉移: ENABLED

閾值: 30 秒

目標: oradg11g

觀察程序: rhel6_lhr

滯後限制: 30 秒 (未使用)

關閉主數據庫: TRUE

自動恢復: TRUE

配置狀態:

ORA-16610: 命令 "REINSTATE DATABASE oradg11g" 正在進行中

DGM-17017: 沒法肯定配置狀態

DGMGRL> show configuration verbose

配置 - fsf_oradg11g_lhr

保護模式: MaxAvailability

數據庫:

oradgphy - 主數據庫

oradg11g - (*) 物理備用數據庫

(*) 快速啓動故障轉移目標

屬性:

FastStartFailoverThreshold = '30'

OperationTimeout = '30'

FastStartFailoverLagLimit = '30'

CommunicationTimeout = '180'

FastStartFailoverAutoReinstate = 'TRUE'

FastStartFailoverPmyShutdown = 'TRUE'

BystandersFollowRoleChange = 'ALL'

快速啓動故障轉移: ENABLED

閾值: 30 秒

目標: oradg11g

觀察程序: rhel6_lhr

滯後限制: 30 秒 (未使用)

關閉主數據庫: TRUE

自動恢復: TRUE

配置狀態:

SUCCESS

DGMGRL>

能夠看到狀態正常， FSF 生效。

一.4.5.4 測試新的環境是否同步

11:26:56 SQL> archive log list;

數據庫日誌模式存檔模式

自動存檔啓用

存檔終點 USE_DB_RECOVERY_FILE_DEST

最先的聯機日誌序列 7

下一個存檔日誌序列 9

當前日誌序列 9

11:31:46 SQL> set line 9999

11:31:50 SQL> col name format a10

col FS_FAILOVER_OBSERVER_HOST format a20

11:31:50 SQL> col DB_UNIQUE_NAME format a15

11:31:50 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradgphy 2551424 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PRIMARY YES READ WRITE TO STANDBY

已用時間: 00: 00: 00.00

11:31:50 SQL> SELECT d.DBID,

11:31:50 2 d.DB_UNIQUE_NAME,

11:31:50 3 d.FORCE_LOGGING,

11:31:50 4 d.FLASHBACK_ON,

11:31:50 5 d.FS_FAILOVER_STATUS,

11:31:50 6 d.FS_FAILOVER_CURRENT_TARGET,

11:31:50 7 d.FS_FAILOVER_THRESHOLD,

11:31:50 8 d.FS_FAILOVER_OBSERVER_PRESENT,

11:31:50 9 d.FS_FAILOVER_OBSERVER_HOST

11:31:50 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradgphy YES YES SYNCHRONIZED oradg11g 30 YES rhel6_lhr

已用時間: 00: 00: 00.00

已用時間: 00: 00: 00.07

11:32:56 SQL> create table lhr.testfsfdg as select * from dual;

表已建立。

已用時間: 00: 00: 00.36

11:33:05 SQL> select * from lhr.testfsfdg ;

已用時間: 00: 00: 00.01

11:33:15 SQL>

備庫：

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 11:31:39 2015

鏈接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

11:31:39 SQL> archive log list;

數據庫日誌模式存檔模式

自動存檔啓用

存檔終點 USE_DB_RECOVERY_FILE_DEST

最先的聯機日誌序列 8

下一個存檔日誌序列 0

當前日誌序列 9

11:31:41 SQL> set line 9999

11:31:55 SQL> col name format a10

11:31:55 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

11:31:55 SQL> col DB_UNIQUE_NAME format a15

11:31:55 SQL> select dbid,name, DB_UNIQUE_NAME,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

SELECT d.DBID,

DBID NAME DB_UNIQUE_NAME CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradg11g 2551429 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PHYSICAL STANDBY YES READ ONLY WITH APPLY NOT ALLOWED

已用時間: 00: 00: 00.01

11:31:55 SQL> 11:31:55 2 d.DB_UNIQUE_NAME,

11:31:55 3 d.FORCE_LOGGING,

11:31:55 4 d.FLASHBACK_ON,

11:31:55 5 d.FS_FAILOVER_STATUS,

11:31:55 6 d.FS_FAILOVER_CURRENT_TARGET,

11:31:55 7 d.FS_FAILOVER_THRESHOLD,

11:31:55 8 d.FS_FAILOVER_OBSERVER_PRESENT,

11:31:55 9 d.FS_FAILOVER_OBSERVER_HOST

11:31:55 10 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradg11g YES YES SYNCHRONIZED oradg11g 30 YES rhel6_lhr

已用時間: 00: 00: 00.01

11:31:55 SQL> select * from lhr.testfsfdg ;

已用時間: 00: 00: 00.00

11:33:21 SQL>

11:33:21 SQL> archive log list;

數據庫日誌模式存檔模式

自動存檔啓用

存檔終點 USE_DB_RECOVERY_FILE_DEST

最先的聯機日誌序列 8

下一個存檔日誌序列 0

當前日誌序列 9

11:35:39 SQL>

能夠看到日誌序列號已經從新開始了。

一.4.5.5 從新shutdown abort主庫回到最初的oradg11g爲主庫，oradgphy爲備庫的狀態

咱們從新shutdown abort主庫回到最初的oradg11g爲主庫，oradgphy 爲備庫的狀態，

[oracle@rhel6_lhr ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.3.0 Production on 星期二 9月 29 13:43:03 2015

鏈接到:

Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

13:43:03 SQL> set line 9999

13:43:17 SQL> col name format a10

13:43:17 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

13:43:17 SQL> col DB_UNIQUE_NAME format a15

13:43:17 SQL> select dbid,name, DB_UNIQUE_NAME,RESETLOGS_CHANGE#,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME RESETLOGS_CHANGE# CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradgphy 2550303 2575340 MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY PRIMARY YES READ WRITE TO STANDBY

已用時間: 00: 00: 00.01

13:43:17 SQL> SELECT d.DBID,

13:43:17 2 d.DB_UNIQUE_NAME,

13:43:17 3 d.FORCE_LOGGING,

13:43:17 4 d.FLASHBACK_ON,

13:43:17 5 DATAGUARD_BROKER,

13:43:17 6 d.FS_FAILOVER_STATUS,

13:43:17 7 d.FS_FAILOVER_CURRENT_TARGET,

13:43:17 8 d.FS_FAILOVER_THRESHOLD,

13:43:17 9 d.FS_FAILOVER_OBSERVER_PRESENT,

13:43:17 10 d.FS_FAILOVER_OBSERVER_HOST

13:43:17 11 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON DATAGUAR FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ -------- ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradgphy YES YES ENABLED SYNCHRONIZED oradg11g 30 YES rhel6_lhr

已用時間: 00: 00: 00.00

13:43:17 SQL> archive log list;

數據庫日誌模式存檔模式

自動存檔啓用

存檔終點 USE_DB_RECOVERY_FILE_DEST

最先的聯機日誌序列 12

下一個存檔日誌序列 14

當前日誌序列 14

13:43:21 SQL> shutdown abort;

ORACLE 例程已經關閉。

13:43:26 SQL>

手動啓動備庫到mount 狀態後繼續查看：

13:45:15 SQL> set line 9999

13:48:27 SQL> col name format a10

13:48:27 SQL> col FS_FAILOVER_OBSERVER_HOST format a20

13:48:27 SQL> col DB_UNIQUE_NAME format a15

13:48:27 SQL> select dbid,name, DB_UNIQUE_NAME,RESETLOGS_CHANGE#,current_scn,protection_mode,protection_level,database_role,force_logging,open_mode,switchover_status from v$database;

DBID NAME DB_UNIQUE_NAME RESETLOGS_CHANGE# CURRENT_SCN PROTECTION_MODE PROTECTION_LEVEL DATABASE_ROLE FOR OPEN_MODE SWITCHOVER_STATUS

---------- ---------- --------------- ----------------- ----------- -------------------- -------------------- ---------------- --- -------------------- --------------------

1403587593 ORADG11G oradg11g 2575356 2575896 MAXIMUM AVAILABILITY RESYNCHRONIZATION PRIMARY YES READ WRITE NOT ALLOWED

已用時間: 00: 00: 00.00

13:48:27 SQL> SELECT d.DBID,

13:48:27 2 d.DB_UNIQUE_NAME,

13:48:27 3 d.FORCE_LOGGING,

13:48:27 4 d.FLASHBACK_ON,

13:48:27 5 DATAGUARD_BROKER,

13:48:27 6 d.FS_FAILOVER_STATUS,

13:48:27 7 d.FS_FAILOVER_CURRENT_TARGET,

13:48:27 8 d.FS_FAILOVER_THRESHOLD,

13:48:27 9 d.FS_FAILOVER_OBSERVER_PRESENT,

13:48:27 10 d.FS_FAILOVER_OBSERVER_HOST

13:48:27 11 FROM v$database d;

DBID DB_UNIQUE_NAME FOR FLASHBACK_ON DATAGUAR FS_FAILOVER_STATUS FS_FAILOVER_CURRENT_TARGET FS_FAILOVER_THRESHOLD FS_FAIL FS_FAILOVER_OBSERVER

---------- --------------- --- ------------------ -------- ---------------------- ------------------------------ --------------------- ------- --------------------

1403587593 oradg11g YES YES ENABLED REINSTATE REQUIRED oradgphy 30 YES rhel6_lhr

已用時間: 00: 00: 00.00

13:48:27 SQL> archive log list

數據庫日誌模式存檔模式

自動存檔啓用

存檔終點 USE_DB_RECOVERY_FILE_DEST

最先的聯機日誌序列 1

下一個存檔日誌序列 3

當前日誌序列 3

13:49:46 SQL>

至此，Fast-Start Failover 的配置及其測試完成。