PSQLException:此连接已关闭 - Spring Boot + AWS RDS + Postgres
问题描述:
尝试访问AWS RDS中的Postgres数据库时,我得到了PSQLException: This connection has been closed
。唯一的例外随机发生的(不是所有我运行代码的时间),它是更可能的,如果它需要一段时间才能执行到达下面的代码发生:PSQLException:此连接已关闭 - Spring Boot + AWS RDS + Postgres
@Transactional
public void revokeChanges(ArrayList<Integer> changeIds) {
jdbcTemplate.batchUpdate(sqlUpdate,
new BatchPreparedStatementSetter() {
@Override
public void setValues(PreparedStatement ps, int i) throws SQLException {
ps.setStuff..
...
}
@Override
public int getBatchSize() {
return changeIds.size();
}
});
jdbcTemplate.batchUpdate(sqlInsert,
new BatchPreparedStatementSetter() {
@Override
public void setValues(PreparedStatement ps, int i) throws SQLException {
ps.setStuff...
}
@Override
public int getBatchSize() {
return changeIds.size();
}
});
连接东西:
spring.datasource.url=jdbc:postgresql://my-url:port/dbName?tcpKeepAlive=true&autoReconnect=true
spring.datasource.driver-class-name=org.postgresql.Driver
相关POM:
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.1.9.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.3-1102-jdbc41</version>
</dependency>
堆栈跟踪:
org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is org.postgresql.util.PSQLException: This connection has been closed. at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:296) at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:320) at org.springframework.jdbc.support.SQLErrorCodesFactory.getErrorCodes(SQLErrorCodesFactory.java:214) at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.setDataSource(SQLErrorCodeSQLExceptionTranslator.java:134) at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.(SQLErrorCodeSQLExceptionTranslator.java:97) at org.springframework.jdbc.support.JdbcAccessor.getExceptionTranslator(JdbcAccessor.java:99) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:660) at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:673) at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:989) at my.package.DataServiceJdbc.revokeChanges(DataServiceJdbc.java:71) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) at com.sun.proxy.$Proxy24.revokeChanges(Unknown Source) at my.package.DataExporterS3ToPostgre.exportData(DataExporterS3ToPostgre.java:59) at my.package.Application.main(Application.java:41) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134) Caused by: org.postgresql.util.PSQLException: This connection has been closed. at org.postgresql.jdbc2.AbstractJdbc2Connection.checkClosed(AbstractJdbc2Connection.java:843) at org.postgresql.jdbc4.Jdbc4Connection.getMetaData(Jdbc4Connection.java:54) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:126) at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109) at org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:80) at com.sun.proxy.$Proxy23.getMetaData(Unknown Source) at org.springframework.jdbc.support.JdbcUtils.extractDatabaseMetaData(JdbcUtils.java:285) ... 29 common frames omitted
答
它看起来像连接DB和游泳池之间丢失。尝试设置removeAbandoned和removeAbandonedTimeout选项。有关这些选项的更多信息,请参阅JDBC Connection Pool docs。
正如我在其他答案中提到的: [我有完全相同的问题......我想到,当做一个长查询时出现同样的错误。在我的例子中,我调用findAll(Iterable ID)并传递了一个超过100'000个ID的巨大列表。对列表进行分区(例如,使用来自Apache Commons或Google Guava的ListUtils)并使用较少的id调用findAll()就可以实现。](http://*.com/a/35582636/3437868) – 2016-02-23 16:22:42