Defining a CICS VR ZZVALUE parameter

CICS® VR ZZVALUES are flags that can be set within the CICS VR code to produce additional tracing and dump information to help resolve errors. However, these flags can be turned on only when instructed by IBM® support to help diagnosis errors that occur.

Therefore it is not recommended to set CICSVR_ZZVALUE_PARM parameter in the active IGDSMSxx member of SYS1.PARMLIB.

This enables you to dynamically set various ZZVALUES with the SETSMS command if you encounter a problem and are instructed by IBM support to do so. This CICSVR_ZZVALUE_PARM parameter must be specified in the active IGDSMSxx member of all systems that run an instance of the CICS VR server address space.

You can specify a none character string as a parameter value, CICSVR_ZZVALUE_PARM(NONE), that is ignored in the active IGDSMSxx member of SYS1.PARMLIB (it is affected during system initialization) or in the SETSMS operator command (it is affected at run time).

Note:

This table lists the values that can be specified for the CICSVR_ZZVALUE_PARM parameter. However, they are listed just as a reference if you are asked by IBM support to specify one of the values. None of the values listed below can be specified for the CICSVR_ZZVALUE_PARM parameter without prior instruction by IBM support. CICS VR data sets affected are identified by the ddnames they are allocated to.

ZZVALUE Meaning
BLANK Clear the ZZVALUE parameter string.
CLEAR Clear, or delete, diagnostic ZZVALUEs.
DISPLAY Display status of a diagnostic session.
START Start a diagnostic session.
STOP Stop a diagnostic session.
FLUSH Flush the DWWDMSG and DWWDUMP data sets.
RESET Empty the DWWDMSG and DWWDUMP data sets.
FDMSG Flush the DWWDMSG data set.
RDMSG Empty the DWWDMSG data set.
FDUMP Flush the DWWDUMP data set.
RDUMP Empty the DWWDUMP data set.
FLUSHMSG Flush the DWWMSG data set.
RESETMSG Empty the DWWMSG data set.
FLUSHALL Flush the DWWMSG, DWWDMSG, and DWWDUMP data sets.
RESETALL Empty the DWWMSG, DWWDMSG, and DWWDUMP data sets.