Fixes are available
4.2.2 Fix Pack 7 (July 2014) for Tivoli Storage Productivity Center
4.2.2 Fix Pack 8 (March 2015) for Tivoli Storage Productivity Center
4.2.2 Fix Pack 9 (May 2015) for Tivoli Storage Productivity Center
4.2.2 Fix Pack 10 (August 2015) for Tivoli Storage Productivity Center
4.2.2 Fix Pack 3 (October 2012) for Tivoli Storage Productivity Center
4.2.2 Interim Fix 2 (December 2012) for Tivoli Storage Productivity Center
APAR status
Closed as program error.
Error description
User upgraded TPC-R from 4.2.1.3 to 4.2.2.2, then got into this problem where there is WAS native Out Of Memory Errors ("failed to fork a thread" or "failed to create a thread"), the thread count is over 2000, and there were 2000-2100 threads in a 'parked' state in the Javacore file.
Local fix
Problem summary
Customers with a large amount of volumes in a session (60,000 pairs +) and a large amount of LSS to LSS pairings are susceptible to this problem. It is surfaced as "An internal error has occurred." This is caused by a native Out of Memory error. "1TISIGINFO Dump Event "systhrow" (00040000) Detail "java/lang/OutOfMemoryError" "Failed to create a thread: retVal -1073741830, errno 12" received" and JavaCore dump files were created. In the JavaCore file there were an unusual amount of threads which were in a parked state.
Problem conclusion
The problem was caused by the high keep-alive value defined for the cached thread pool. A small change was made to ensure that the service is shutdown after all work has completed. If this problem is hit replication continues on the hardware but access to TPC-R will be impacted.
Temporary fix
Restart the TPC-R server
Comments
APAR Information
APAR number
PM71557
Reported component name
TPC FOR REPL Z/
Reported component ID
5608TRMZ0
Reported release
51B
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-08-24
Closed date
2012-09-21
Last modified date
2012-09-21
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
TPC FOR REPL Z/
Fixed component ID
5608TRMZ0
Applicable component levels
R42B PSY
UP
R51B PSY
UP
[{"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSMN28","label":"Tivoli Storage Productivity Center for Replication"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"51B"}]
Document Information
Modified date:
29 October 2021