A fix is available
APAR status
Closed as program error.
Error description
DB2 storage ABND 04E 00E20003 in DSNGEGFB DSNSVBK +070E as this problem was caused by scheduling write requests faster than write engines could become available. Message DSNV508I was also seen.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: ALL V10 DB2 users. * **************************************************************** * PROBLEM DESCRIPTION: MSGDSNV508I DSNVMON - DB2 DBM1 BELOW * * THE BAR STORAGE * * * * ABEND04E RC00E20003 in DSNSVBK * **************************************************************** * RECOMMENDATION: * **************************************************************** The DBM1 address space is consuming a large amount of available 31-bit below-the-bar storage. This problem is caused by DB2 scheduling asynchronous DASD write requests faster than the write engines could process them. These requests are queued up in a below-the-bar storage pool.
Problem conclusion
DB2 has been modified to help alleviate below-the-bar storage shortages for a specific scenario: When a buffer pool's vertical deferred write threshold is reached, for the same page set or partition, DB2 will avoid scheduling multiple asynchronous DASD write requests if one is already in the queue waiting to be processed by the next available write engine.
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PM60650
Reported component name
DB2 OS/390 & Z/
Reported component ID
5740XYR00
Reported release
A10
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt
Submitted date
2012-03-16
Closed date
2012-05-01
Last modified date
2012-06-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK78404
Modules/Macros
DSNB5COM
Fix information
Fixed component name
DB2 OS/390 & Z/
Fixed component ID
5740XYR00
Applicable component levels
RA10 PSY UK78404
UP12/05/16 P F205
Fix is available
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Document Information
Modified date:
03 June 2012