DFS4165W FDR FOR (imsid) XCF DETECTED TIMEOUT ON ACTIVE IMS SYSTEM, REASON = reason
Explanation
XCF notified the Fast DB Recovery region that
a timeout occurred on the IMS system identified by imsid.
The variable reason is one of the following:
- IMS SURV., DIAGINFO = nnnnnnnn
- XCF reported the timeout. At least one IMS TASK
or ITASK might be in a loop or wait state in the IMS system.
The nnnnnnnn indicates which TASK or ITASK might
have caused the timeout. nnnnnnnn is made of two
parts. The first 2 bytes indicate the TASK or ITASK getting the timeout,
and the second 2 bytes indicate whether another TASK or ITASK might
be involved, as shown in the following table:
Table 1. TASK or ITASK involvement TASK or ITASK in timeout TASK or ITASK possibly involved Bit 0 x'8000' CTL TCB IMS Control Task Bit 1 x'4000' XFP TCB Fast Path Control Task Bit 2 x'2000' CST ITASK Common Services ITASK Bit 3 x'1000' CHK ITASK Checkpoint ITASK Bit 4 x'0800' SAS ITASK DLISAS ITASK Bit 5 x'0400' FP CST00 Fast Path Common Services ITASK Bit 6 x'0200' FP CSTS0 Fast Path Common Services dependent ITASK Bit 7 x'0100' reserved - IMS SURV., DIAGINFO = N/A
- XCF detected the timeout. The IMS address space might be non-dispatchable or the status exit routine might have failed.
- SYSTEM, DIAGINFO = nnnnnnnn
- XCF detected the timeout. The failure or event was at the z/OS-system level. The nnnnnnnn represents the GEPLFLGS word of the list of input parameters from the XCF group exit routine. The values are documented in z/OS MVS Data Areas, Vol 3 (IVT-RCWK) (GA22-7583), under macro IXCYGEPL. In addition, you might find this information in the IXCYGEPL macro in SYS1.MACLIB.
System action
Processing continues.
If log surveillance also detects a timeout status, DFS4164W follows this message.
Operator response
Check the status of the IMS and z/OS® systems. If IMS is in a loop or a wait state, terminate IMS with the MVS MODIFY command (F activeims,DUMP) to initiate database recovery in the Fast DB Recovery region.
If a z/OS or hardware failure occurred, reset the system and enter the MVS MODIFY command (F fdrproc,RECOVER) to initiate database recovery.
System programmer response
Call IBM® Software Support for assistance.