Explanation
XCF issues this message after successfully invoking
SDUMP processing to dump coupling facility (CF) structures. CF structure(s)
are dumped by XCF either due to taking over dump processing or initiating
dump processing. For normal SVC dump processing, SDUMP provides the
requested CF structure(s) in the requested dump. The processing to
dump CF structure(s) captures the data in a dump table associated
with an instance of the CF structure. Once the captured data as been
written to a dump data set by SDUMP, the dump table is deleted.
For
failures during normal SVC dump processing, XCF will perform dump
takeover processing. Dump takeover will handle recovery for CF structure
dumps when a system that was taking the dump terminates or loses connectivity
to the coupling facility containing the CF structure. XCF will also
initiate dump processing for CF structure(s) that the installation
has designated to be dumped via the CHNGDUMP command.
Dump initiation
processing will initiate dumps of CF structure(s) as follows:
- When a system that had active connection(s) to the structure terminates.
- When all systems in a sysplex terminate.
- When all systems connected to a coupling facility terminate.
For both dump takeover and initiation, the dump contains
only data captured from CF structure(s). The dump with title "COMPON=XCF,COMPID=....SCXCF,
ISSUER=IXCL2STR,TRACE THREAD: thread,CF STR(S)
— dumptrigger" can be related to this message by
using the trace thread.
In the message text:
- dumptrigger
- The trigger for taking the dump of coupling facility structure(s).
Possible reasons for dumping a structure include:
- The installation requested structure(s) to be dumped via a CHNGDUMP
command.
- The coupling facility already had dump data captured for structure(s).
dumptrigger is one of the following:
- GAIN OWNERSHIP OF CF
- During the processing to gain ownership for the sysplex of a coupling
facility, a dump of coupling facility structure(s) was initiated.
- LOST CF CONNECTIVITY
- Due to a system having lost connectivity to a coupling facility,
another system having connectivity to the coupling facility has initiated
a dump of coupling facility structure(s).
- SYSTEM FAILURE
- Due to the failure of a system in the sysplex, another system
has initiated a dump of coupling facility structure(s)
- thread
- Used to tie together this message, the dump title for the CF STR(S)
dump, and XCF component trace records from the processing to take
the dump of coupling facility structure(s).
- THE FOLLOWING STRUCTURES HAVE BEEN DUMPED:
- This line is followed by a list of structures that have been dumped.
- StrNameList
- The list of structures than have been dumped. Up to three structure
names will appear on each line. When more than one instance of a structure
had been dumped, the structure name will appear in the list once for
each instance in the dump. For example, a duplexed structure has two
instances allocated and both could be in the same dump.
System action
System processing continues.
Operator response
System programmer response
Use the trace thread to locate the
dump taken by the system issuing this message. To aid in problem determination,
provide the dump to the application(s) or subsystem(s) associated
with the listed CF structure(s).
Source
Cross System Coupling Facility (SCXCF)
Module
Routing code
Descriptor code