Disconnecting CICS applications

To disconnect a particular CICS® transaction from Db2, you must abnormally terminate the transaction.

To disconnect a CICS application from Db2, use one of the following methods:

• The Db2 command CANCEL THREAD can be used to cancel a particular thread. CANCEL THREAD requires that you know the token for any thread that you want to cancel.
  Enter the following command to cancel the thread that is identified by the token as indicated in the display output.

  -CANCEL THREAD(46)

  When you issue the CANCEL THREAD command for a thread, that thread is scheduled to be terminated in Db2.

• The command DSNC DISCONNECT terminates the threads allocated to a plan ID, but it does not prevent new threads from being created. This command frees Db2 resources that are shared by the CICS transactions and allows exclusive access to them for special-purpose processes such as utilities or data definition statements.

  The thread is not canceled until the application releases it for reuse, either at SYNCPOINT or end-of-task.