Glassfish/Toplink 和 sqljdbc.jar 在断开的数据库连接上永远重试

Question

我将 Glassfish 和 Toplink 与 MS-SQL-Server 一起使用，因此 sqljdbc4.jar 用于连接到数据库。当数据库不可用（数据库服务器关闭）时，CPU 使用率会上升到 100%，并且 Glassfish 会一直尝试连接。我的日志很快就充满了以下消息：

FINE: TDSChannel (ConnectionID:7) read failed:Connection reset
FINE: *** SQLException:ConnectionID:7 com.microsoft.sqlserver.jdbc.SQLServerException: Connection reset Connection reset
FINE: com.microsoft.sqlserver.jdbc.SQLServerConnection.terminate(SQLServerConnection.java:1368)com.microsoft.sqlserver.jdbc.SQLServerConnection.terminate(SQLServerConnection.java:1355)com.microsoft.sqlserver.jdbc.TDSChannel.read(IOBuffer.java:1532)com.microsoft.sqlserver.jdbc.TDSReader.readPacket(IOBuffer.java:3274)com.microsoft.sqlserver.jdbc.TDSReader.nextPacket(IOBuffer.java:3227)com.microsoft.sqlserver.jdbc.TDSReader.ensurePayload(IOBuffer.java:3203)com.microsoft.sqlserver.jdbc.TDSReader.peekTokenType(IOBuffer.java:3420)com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:50)com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:39)com.microsoft.sqlserver.jdbc.SQLServerStatement.processExecuteResults(SQLServerStatement.java:1064)com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement$PrepStmtExecCmd.processResponse(SQLServerPreparedStatement.java:345)com.microsoft.sqlserver.jdbc.TDSCommand.close(IOBuffer.java:4111)com.microsoft.sqlserver.jdbc.SQLServerStatement.discardLastExecutionResults(SQLServerStatement.java:99)com.microsoft.sqlserver.jdbc.SQLServerStatement.closeInternal(SQLServerStatement.java:592)com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.closeInternal(SQLServerPreparedStatement.java:170)com.microsoft.sqlserver.jdbc.SQLServerStatement.close(SQLServerStatement.java:604)com.sun.gjc.spi.ManagedConnectionFactory.isValidByTableQuery(ManagedConnectionFactory.java:397)com.sun.gjc.spi.ManagedConnectionFactory.isValid(ManagedConnectionFactory.java:297)com.sun.gjc.spi.ManagedConnectionFactory.getInvalidConnections(ManagedConnectionFactory.java:246)com.sun.enterprise.resource.AbstractConnectorAllocator.getInvalidConnections(AbstractConnectorAllocator.java:99)com.sun.enterprise.resource.AbstractResourcePool.removeInvalidResources(AbstractResourcePool.java:1535)com.sun.enterprise.resource.AbstractResourcePool.removeInvalidAndIdleResources(AbstractResourcePool.java:1515)com.sun.enterprise.resource.AbstractResourcePool.resizePool(AbstractResourcePool.java:1448)com.sun.enterprise.resource.AbstractResourcePool$Resizer.run(AbstractResourcePool.java:1610)java.util.TimerThread.mainLoop(Timer.java:512)java.util.TimerThread.run(Timer.java:462)

有没有办法为数据库连接设置重试限制，或者连接重试之间的暂停超时？

如何让 Glassfish 抛出异常而不是尝试永远连接？

Answer 1

我们追踪到了这一点，这似乎是 Microsoft 的 sqljdbc4.jar 中的一个错误：

https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=483322

Answer 2

的GlassFish的HADB版提供不含DataDirect的JDBC驱动器，用于MS SQL，可以处理连接重置和关闭