This is a defect with the Informix JDBC Driver version
2.21.JC5 (or earlier versions).
Below is an excerpt of the hang thread from the thread dump (javacore)
of your application server Java Virtual Machine (JVM™):
at
com.informix.jdbcx.IfxSqliConnReUsableConnection.close(IfxSqliConnReUsableConnection.java:120)
at
com.ibm.ws.rsadapter.spi.WSRdbManagedConnectionImpl.destroy(WSRdbManagedConnectionImpl.java:1738)
at
com.ibm.ejs.j2c.MCWrapper.destroy(MCWrapper.java:1304)
at
com.ibm.ejs.j2c.poolmanager.FreePool.cleanupAndDestroyMCWrapper(FreePool.java:463)
at
com.ibm.ejs.j2c.poolmanager.FreePool.returnToFreePool(FreePool.java:275)
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