|
Problem IT05148
|
Status: Closed |
DB2_FMP_COMM_HEAPSZ DOES NOT PROPERLY SET FMP HEAP/SET SIZE FOR VALUES < 256MB |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
The virtual shared memory allocation for FMP memory on UNIX was
increased to 256MB on DB2 version 9.5. (the documentation will
be corrected as it indicates a smaller value for non-AIX
platforms). It may be desirable to set DB2_FMP_COMM_HEAPSZ to
override the default setting to a lower value for
small-footprint instances on consolidated systems, and this
should be honored as documented (as it is when setting a value
higher than 256MB - 65536 4K pages). This is more relevant for
operating systems where the virtual shared memory allocation
counts towards some resource or limit - swap and shared memory
limits on Solaris, HP-UX, or shmall shared memory virtual limit
on Linux. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Systems with constrained virtual memory, large number of *
* small-footprint instances *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix pack 11 *
**************************************************************** |
| Local Fix: |
increase resource (swap on Solaris or HP-UX) or virtual shared
memory limit (Solaris, HP-UX, Linux) |
| Solution |
Problem first fixed in DB2 Version 9.7 Fix Pack 11 |
| Workaround |
see Local Fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 23.10.2014
20.10.2015
20.10.2015 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP11
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.11
|
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