Sybase IQ Server, Multiselect and compare the below 2.
Sybase IQ 12.6 - 39
Sybase_IQ_12.7 -40

After the comparison is over, select each Server and disconnect and this exception is generated. This doesnt occur when I Connect and Disconnect a Sybase IQ server. Only when its multiselected -- Compare -- Disconnected; this happens.

java.sql.SQLException: JZ0C0: Connection is already closed.
 at com.sybase.jdbc3.jdbc.ErrorMessage.raiseError(Unknown Source)
 at com.sybase.jdbc3.jdbc.SybConnection.checkConnection(Unknown Source)
 at com.sybase.jdbc3.jdbc.SybConnection.close(Unknown Source)
 at nmfl.aDM.run(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
 at java.lang.Thread.run(Thread.java:619)
java.sql.SQLException: JZ0C0: Connection is already closed.
 at com.sybase.jdbc3.jdbc.ErrorMessage.raiseError(Unknown Source)
 at com.sybase.jdbc3.jdbc.SybConnection.checkConnection(Unknown Source)
 at com.sybase.jdbc3.jdbc.SybConnection.close(Unknown Source)
 at nmfl.aDM.run(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
 at java.lang.Thread.run(Thread.java:619)