轉 EXPDP ORA-39095 ORA-3909 錯誤

今天幫同事在測試庫上導出兩張表，第一張表大小爲30M，第二章表大小爲7G，如下是expdp語法

expdp tranuser/******** parallel=4 content=data_only directory=my_job dumpfile=wuqi02.dmp job_name=wuqi02 tables=(table_name)

第一張表很簡單的導出完畢了，可是導出第二張表的時候則報錯，報錯內容以下

;;; 

Export: Release 11.2.0.1.0 - Production on Fri May 13 13:40:01 2011

 

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

;;; 

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production

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

Starting "TRANUSER"."WUQI02":  tranuser/******** parallel=4 content=data_only directory=my_job dumpfile=wuqi02.dmp job_name=wuqi02 tables=(BOND_CB_YIELD_CUR_F) 

Estimate in progress using BLOCKS method...

Processing object type TABLE_EXPORT/TABLE/TABLE_DATA

Total estimation using BLOCKS method: 7.062 GB

ORA-39095: Dump file space has been exhausted: Unable to allocate 8192 bytes

Job "TRANUSER"."WUQI02" stopped due to fatal error at 13:40:20

Job WUQI02 has been reopened at Friday, 13 May, 2011 13:44 

Restarting "TRANUSER"."WUQI02":  tranuser/******** parallel=4 content=data_only directory=my_job dumpfile=wuqi02.dmp job_name=wuqi02 tables=(BOND_CB_YIELD_CUR_F) 

ORA-39097: Data Pump job encountered unexpected error -39079

ORA-39065: unexpected master process exception in DISPATCH

ORA-39079: unable to enqueue message RP,KUPC$C_1_20110513134453,MCP,KUPC$A_1_20110513134602,1,Y

ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86

ORA-06512: at "SYS.KUPC$QUE_INT", line 965

ORA-24033: no recipients for message

ORA-39065: unexpected master process exception in SEND

ORA-39079: unable to enqueue message RP,KUPC$C_1_20110513134453,MCP,KUPC$A_1_20110513134602,1,Y

ORA-06512: at "SYS.DBMS_SYS_ERROR", line 86

ORA-06512: at "SYS.KUPC$QUE_INT", line 965

ORA-24033: no recipients for message

Job "TRANUSER"."WUQI02" stopped due to fatal error at 13:46:03

Job WUQI02 has been reopened at Friday, 13 May, 2011 13:53 

ORA-39012: Client detached before the job started.

Job "TRANUSER"."WUQI02" stopped due to fatal error at 14:13:31

 

經過在網上查找相關的解決文檔，我發現我此次的報錯分爲兩個， 一個是ORA-39095，另外一個是ORA-39097，下面讓咱們來解決一下這個兩個報錯。

 

1：解決ORA-39095報錯，出現該報錯的緣由通常分爲兩種狀況。

第一種狀況是由於在expdp的時候給才轉儲空間過小，數據沒法寫入轉儲文件內，因此報錯，這種報錯很好解決，只須要進入交互模式下，能夠用add_file來增長轉儲文件，而後restart該job便可。

 

第二種狀況則是由於設置參數parallel大於轉儲文件數目引發的，官方文檔的解釋是 parallel io server processes寫文件不能同時寫一個，若是隻有一個dumpfile(或少於parallel)就會影響性能。不但如此，當一個io server process在等待從而不能寫dumpfile的時候就會報ORA-39095

解決該問題一共兩種辦法

1：進入到交互模式，減小parallel的數量，使其等於dmp文件的數量或 增長dmp文件，使其與parallel數量相等。

2：在寫導出語句的時候指定 dumpfile中使用變量 %u(大小寫都可)，讓其自由分配轉儲文件便可。