CICS TS VSE/ESA 1.1.1 shutdown hangs when using DFHJCJCX

Question

Why is my CICS Transaction Server for VSE/ESA (CICS TS) V1.1.1 region hanging at shutdown after I enable ENQ/DEQ exit XKCREQ which calls DFHJCJCX? The region continues to hang until I cancel it. I am using the shutdown assist program DFHSDAP but it did not help in this case.

I use the following command to enable exit XKCREQ in the CICS region so the exit should control before every ENQUEUE and DEQUEUE request:

 EXEC CICS ENABLE EXIT(XKCREQ) PROG(program) GALENGTH(1000) START 

The exit program contains these exit programming interface (XPI) commands:

 DFHJCJCX CALL,CLEAR,IN, 
       FUNCTION(WRITE_JOURNAL_DATA), 
       FROM(FROM_BLK), 
       JOURNAL_ID(02), 
       JOURNAL_RECORD_ID('WK'), 
       WAIT(NO), 
       OUT, 
       RESPONSE(*), 
       REASON(*) 
 
 DFHXMIQX CALL,CLEAR,IN, 
       FUNCTION(INQUIRE_TRANSACTION), 
       OUT, 
       TRANSACTION_ID(tran), 
       TRANNUM(trno), 
       RESPONSE(*), 
       REASON(*) 

Dump analysis: Dispatcher shows that USER task is active with resource type JCBUFFER and RESOURCE_NAME is AVAIL_02 . AVAIL_02 is CICS Journal02. So it appears that there is deadlock situation.