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*SUSE Linux Enterprise Server (SLES) 7 - DB2 UDB V8.1 *

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SUSE Linux Enterprise Server (SLES) 7

The information contained in this page outlines SUSE Linux Enterprise Server (SLES) 7 specific information on DB2 UDB V8.1.

 

Validated Platforms

The base kernel level and the base library levels listed here are the default levels provided by the Linux Environment in question. Kernel and library levels that differ from this due to update packages provided by the Linux distributor are also supported.

Platform DB2 Instance Base Kernel Level Libraries Comments
x86 SUSE Linux Enterprise Server (SLES) 7 2.4.7 glibc-2.2.2  
zSeries (31 bit) SUSE Linux Enterprise Server (SLES) 7 2.4.7-58 glibc-2.2.4 Required SUSE refresh: (3)
 
compat.rpm contains libstdc++ 6.1
&nbs;
For java support with the 2.4 kernel, use JDK 1.3.1 service release 1.

 

Known Issues and Limitations

This section summarizes some of the issues that were encountered during the DB2 UDB V8.1 validation process and lists any possible solutions.

Please note that some of the workarounds or solutions provided below might require that the DB2 UDB installation be upgraded to a recent fixpack. In order to upgrade to a fixpack, you must have the base DB2 UDB GA version installed before installing the fixpack. It is sufficient to install the fixpack you require; there is no need to install previous fixpacks to the one you need. i.e. if you need FP4, you do not need to install FP1, FP2, FP3 before installing FP4. You do, however, need to install DB2 UDB V8.1.0 (GA). DB2 UDB fixpacks can be obtained from http://www.ibm.com/db2/.

Symptoms Problem Recommended Solution
2.4.9 kernel oops in multi-partitioned environment 2.4.9 kernel has some known issues - see below - which might effect DB2 multi-partition setup Upgrading to kernel level 2.4.9-12 minimum should prevent this problem. Higher kernel levels should also be ok.
The kswapd process takes up large portion of CPU time (sometimes at 99% CPU usage) while no real swapping seems to be done (sometimes swap usage is at zero) This problem is usually diagnosed in machines with larger memory sizes under very high stress loads. (behaviour exhibited in kernel level 2.4.9) More recent Linux Environments do not exhibit this problem as they have moved up to higher kernel levels. Recommended solution on Linux Environments with kernel levels lower than 2.4.18 is to upgrade kernel to a higher level.
High memory usage with little system load (systems with kernel 2.4.9) A memory leak on the 2.4.9 kernel is a distinct possibility. Upgrading to kernel level 2.4.9-12 minimum should prevent this problem. Higher kernel levels should also be ok.
System fails and /var/log/messages file reports journaling error. File systems that are formatted as ext3 can exhibit this known journaling issue. This is apparently an SMP race condition that Red Hat has identified in the 2.4.9 kernel and provides a fix for. The errata advisory that describes the problem can be found here. One solution is to upgrade your system to be at the latest levels of your Environment and ensure a fix is in place.
 
Another solution is to convert your ext3 partition to ext2. To avoid the problem altogether with kernels lower that 2.4.18, please format your partitions using another format.
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