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DB2 - Problem description
| Problem IT30795 | Status: Closed |
NUMBLOCKPAGES OF A BUFFERPOOL MAY BE ADJUSTED TO AN INVALID VALUE | |
| product: | |
DB2 FOR LUW / DB2FORLUW / B50 - DB2 | |
| Problem description: | |
STMM tries to shrink the bufferpools by a factor
(sqlbScaleAutoBPsByFactor()):
FUNCTION: DB2 UDB, buffer pool services,
sqlbScaleAutoBPsByFactor, probe:12828
DATA #1 :
Defer writing on-disk changes for BP ID=7;old size=156585; new
size=57365
In some scenario the bufferpool is shrunk to a negative size
leading to the sqlbfix error:
FUNCTION: DB2 UDB, buffer pool services,
sqlbScaleAutoBPsByFactor, probe:12828
DATA #1 :
Defer writing on-disk changes for BP ID=8;old size=156585; new
size=57365
FUNCTION: DB2 UDB, buffer pool services,
sqlbSetNumSlotsAndNBPForNewRTBPDef, probe:20
MESSAGE : ADM6069W Buffer pool "XXXXXXXX" (ID "8") has a
NUMBLOCKPAGES value of
"4096" which exceeds the maximum supported value for a
buffer pool of
this size. The NUMBLOCKPAGES value for this buffer
pool has been
reduced to "-2147483648" for its current activation.
The value of
NUMBLOCKPAGES can be permanently changed by using the
ALTER
BUFFERPOOL SQL statement.
FUNCTION: DB2 UDB, Common Trace API, sqlbfix, probe:1632
DATA #1 : String, 67 bytes
sqlbSetNumSlotsAndNBPForNewRTBPDef: max numPages has been
exceeded!
DATA #2 : Hexdump, 4 bytes
0x00007FCD3AFFA620 : 5486 FEFF
T... | |
| Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Db2 11.1.4.5 or later * **************************************************************** | |
| Local Fix: | |
| Solution | |
| Workaround | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Db2 11.1.4.5 or later * **************************************************************** | |
| Comment | |
Upgrade to Db2 11.1.4.5 or later | |
| Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 31.10.2019 31.10.2019 31.10.2019 |
| Problem solved at the following versions (IBM BugInfos) | |
| Problem solved according to the fixlist(s) of the following version(s) | |
