Fix for APAR PM51655 is needed on DB2 10 for z/OS data sharing environments as a prevention of potential data loss
BM has become aware of potential data loss when running data sharing under any mode of DB2 10 for z/OS.
DB2 10 for z/OS takes advantage of a CFCC/XES performance enhancement by allowing repeated READ CASTOUT CLASS requests to the CF to utilize a restart token and retrieve from the queue where the previous read left off . A defect has been identified in this implementation of the enhanced READ CASTOUT CLASS in DB2 10 for z/OS.
APAR PM51655 will revert the DB2 10 behavior of the READ CASTOUT CLASS to the DB2 V9, and prior releases, behavior.Recommended Actions:
It is strongly encouraged that all DB2 10 for z/OS data sharing customers apply the fix for the APAR PM51655 as soon as possible. The corrective maintenance can be applied incrementally across the members of a data sharing group. A group wide restart is not required.
The ++APAR correction for PM51655 has been placed on the FTP server and will remain there until that time that the DB2 10 for z/OS PTF (UK73864) can be ordered via the normal service delivery channels. Access to the FTP server is as follows:
FTP Server: testcase.software.ibm.comAdding a comment : it's not a straightforward link because you first have to login to the ftp server. If you don't remember your userid : anonymous without password works as well.
Filename: PM51655.HDBAA10 Note:
The file is binary, not tersed.
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