springboot启动链接池创建失败报错问题定位

最近因为项目的须要，使用了springboot作为定时任务调用存储过程。在部分环境中测试时，经过java -jar命令执行后，用kill -9命令直接杀掉进程的方式，并无出现什么新建链接的异常。可是在预发布环境中碰到了这样的问题。

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.

--查看当前有哪些用户正在使用数据
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的服务安装和部署，发现官方其实提供了安全的服务stop时的安全退出机制

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

service myapp start

其中生成的springboot服务的jar包为可执行文件，经过在pom文件中配置

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

 

 

参考资料：

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