A fix is available
APAR status
Closed as program error.
Error description
In dynamic statement cache, there are enough storage in the LRU chain with zero refer counter while EDM is requesting for a few 4K pages. Db2 failed to get the storage via LRU chain which results in the EDM pool full error: DSNT500I DB2A DSNGEPIS RESOURCE UNAVAILABLE REASON 00C90089 TYPE 00000603 With IFCID 133 and 134 turned on, customer will get this dump: ABEND04E RC00C90089 at DSNGERBK OFFSET258A Additional keywords: SQLDYNSTMTCACHE SQLSTORAGE MSGDSNT500I IFCID133 IFCID134
Local fix
Recyle Db2 to clean dynamic statement cache
Problem summary
**************************************************************** * USERS AFFECTED: All Db2 V11 users. * **************************************************************** * PROBLEM DESCRIPTION: The following EDM pool full * * situations can occur: * * DSNT500I RESOURCE UNAVAILABLE * * with reason 00C90089 * * resource type 00000603 * * (EDM dynamic statement space) or * * resource type 00000602 (EDM DBD space). * * If customer has IFCID 134 turned on, * * customer will get this dump: * * ABEND04E RC00C90089 at DSNGERBK * * OFFSET258A * **************************************************************** * RECOMMENDATION: * **************************************************************** Due to logic error, Db2 Least Recently Used (LRU) Page Replacement Algorithm could stop LRU the pages while there are still LRUable storage.
Problem conclusion
Db2 is fixed to avoid the aforementioned EDM pool full situations by improving the EDM LRU logic. Additional keywords: SQLDYNSTMTCACHE
Temporary fix
Comments
APAR Information
APAR number
PH01714
Reported component name
DB2 OS/390 & Z/
Reported component ID
5740XYR00
Reported release
B10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-08-14
Closed date
2018-12-20
Last modified date
2019-02-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI60445
Modules/Macros
DSNGERBK
Fix information
Fixed component name
DB2 OS/390 & Z/
Fixed component ID
5740XYR00
Applicable component levels
RB10 PSY UI60445
UP19/01/17 P F901
Fix is available
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Document Information
Modified date:
02 February 2019