Does the problem affect only shared queues?

If the problem affects only queue-sharing groups, use the VERIFY QSG function of the CSQ5PQSG utility. This command verifies that the DB2 setup is consistent in terms of the bitmap allocation fields, and object definition for the DB2 queue manager, structure, and shared queue objects, and reports details of any inconsistency that is discovered.

The following is an example of a VERIFY QSG report with errors:

CSQU501I   VERIFY QSG function requested                 
CSQU503I   QSG=SQ02, DB2 DSG=DSN710P5, DB2 ssid=DFP5     
CSQU517I   XCF group CSQGSQ02 already defined            
CSQU520I   Summary information for XCF group CSQGSQ02
CSQU522I   Member=MQ04, state=QUIESCED, system=MV4A                             
CSQU523I   User data=D4E5F4C15AD4D8F0F4404040C4C5....
CSQU522I   Member=MQ03, state=QUIESCED, system=MV4A                             
CSQU523I   User data=D4E5F4C15AD4D8F0F3404040C4C6....
CSQU526I   Connected to DB2 DF4A                                                
CSQU572E   Usage map T01_ARRAY_QMGR and DB2 table CSQ.ADMIN_B_QMGR inconsistent
CSQU573E   QMGR MQ04 in table entry 1 not set in usage map                      
CSQU574E   QMGR 27 in usage map has no entry in table                           
CSQU572E   Usage map T01_ARRAY_STRUC and DB2 table CSQ.ADMIN_B_STRUCTURE inconsistent
CSQU575E   Structure APPL2 in table entry 4 not set in usage map
CSQU576E   Structure 55 in usage map has no entry in table                      
CSQU572E   Usage map T03_LH_ARRAY and DB2 table CSQ.OBJ_B_QUEUE inconsistent
CSQU577E   Queue MYSQ in table entry 13 not set in usage map for structure APPL1
CSQU576E   Queue 129 in usage map for structure APPL1 has no entry in table
CSQU528I    Disconnected from DB2 DF4A                                           
CSQU148I    CSQ5PQSG Utility completed, return code=12