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【DM版本】:DM Database Server x64 V8
【操作系统】：CentOS Linux
【CPU】:
【问题描述】*：应用后端定时任务经常性出现如下错误（每天出现几次）:
Caused by: dm.jdbc.driver.DMException: 网络通信异常
at dm.jdbc.driver.DBError.throwException(DBError.java:757)
at dm.jdbc.b.a.a(DBAccess.java:232)
at dm.jdbc.b.a.a(DBAccess.java:686)
at dm.jdbc.driver.DmdbPreparedStatement.prepareSql(DmdbPreparedStatement.java:267)
at dm.jdbc.driver.DmdbPreparedStatement.allocateHandle(DmdbPreparedStatement.java:224)
at dm.jdbc.driver.DmdbPreparedStatement.<init>(DmdbPreparedStatement.java:126)
at dm.jdbc.driver.DmdbPreparedStatement.<init>(DmdbPreparedStatement.java:176)
at dm.jdbc.driver.DmdbConnection.do_prepareStatement(DmdbConnection.java:709)
at dm.jdbc.driver.DmdbConnection.do_prepareStatement(DmdbConnection.java:695)
at dm.jdbc.driver.DmdbConnection.prepareStatement(DmdbConnection.java:1327)
at com.alibaba.druid.pool.DruidPooledConnection.prepareStatement(DruidPooledConnection.java:350)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:162)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186)
... 24 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:189)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at dm.jdbc.b.a.c.a(ByteArrayNode.java:129)
at dm.jdbc.b.a.a.a(Buffer.java:364)
at dm.jdbc.b.a.e(DBAccess.java:312)
at dm.jdbc.b.a.a(DBAccess.java:222)
... 35 more