springboot啓動鏈接池創建失敗報錯問題定位

最近因爲項目的須要，使用了springboot作爲定時任務調用存儲過程。在部分環境中測試時，經過java -jar命令執行後，用kill -9命令直接殺掉進程的方式，並無出現什麼新建鏈接的異常。可是在預發佈環境中碰到了這樣的問題。

Caused by: org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (IO Error: Connection reset)
        at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
        ... 40 common frames omitted
Caused by: java.sql.SQLRecoverableException: IO Error: Connection reset
        at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:228)
        at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32)
        at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:521)
        at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:1556)
        at org.apache.commons.dbcp.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:1545)
        ... 44 common frames omitted
Caused by: java.net.SocketException: Connection reset
        at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
        at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
        at oracle.net.ns.DataPacket.send(DataPacket.java:199)
        at oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:211)
        at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:227)
        at oracle.net.ns.NetInputStream.read(NetInputStream.java:175)
        at oracle.net.ns.NetInputStream.read(NetInputStream.java:100)
        at oracle.net.ns.NetInputStream.read(NetInputStream.java:85)
        at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:123)
        at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:79)
        at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1122)
        at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1099)
        at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:288)
        at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191)
        at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:366)
        at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:752)
        at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:366)
        ... 52 common frames omitted

java.net.SocketException: Connection reset
This exception appears when the remote connection is unexpectedly and forcefully closed due to various reasons like application crash, system reboot, hard close of remote host. Kernel from the remote system sends out a packets with RST bit to the local system. The local socket on performing any SEND (could be a Keep-alive packet) or RECEIVE operations subsequently fail with this error. Certain combinations of linger settings can also result in packets with RST bit set.

--查看當前有哪些用戶正在使用數據
SELECT osuser,
       a.username,
       a.OSUSER,
       a.STATE,
       a.STATUS,
       a.PORT,
       a.EVENT,
       a.EVENT#,
       cpu_time / executions / 1000000 || 's',
       b.sql_text,
       machine
  from v$session a, v$sqlarea b
 where a.sql_address = b.address
 order by cpu_time / executions desc;

 

springboot的服務安裝和部署，發現官方其實提供了安全的服務stop時的安全退出機制

sudo ln -s /var/myapp/myapp.jar /etc/init.d/myapp

service myapp start

其中生成的springboot服務的jar包爲可執行文件，經過在pom文件中配置

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <configuration>
        <executable>true</executable>
    </configuration>
</plugin>

 

 

參考資料：

http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/#deployment-install