7. Installing DB2 Version 8.2 on SuSE Linux Enterprise (SLES) 9

7.1. Pre-installation notes

1. The pdksh package is installed in a default setup (required for multiple-partition and high availability installations)

2. The IBMJava2-JRE-1.4.2 rpm package is also installed by default

3. The kernel parameters (ipcs -l) before DB2 UDB installation:

   max number of segments: 4096 max segsize: 32768 max number of arrays: 128 max queues system wide: 16 default max size of queue: 16384

4. Asynchronous I/O package (libaio) is also installed by default.

7.2. Installation Notes

I received an error during start up of the db2setup utility:

/db2/ese/db2/linux/install/db2jinst: line 131: 3474 Segmentation fault $JAVA_PATH/$JAVA_INTERPRETER $JAVA_OPTIONS \ -cp $JAVA_CLASSPATH $DB2SetupRun "$@" 2>/tmp/db2setup.err.running

The solution here is to run

export LD_ASSUME_KERNEL="2.4.19"

from the terminal where you launched the db2setup utility, then run db2setup again. This change will only affect the Java installer, not the kernel performance.

7.3. Post-installation notes

The kernel parameters (ipcs -l) after installation look like:

max number of segments: 4096 max segsize: 262144 (updated) max number of arrays: 1024 (updated) max queues system wide: 1024 (updated) default max size of queue: 16384

Initialize the Asynchronous I/O so DB2 UDB can take advantage of this new kernel feature. As the instance owner:

db2set DB2LINUXAIO=TRUE

Optional: update the DB2 UDB JDK_PATH parameters so DB2 UDB uses SLES's installed Java 2 package. As the instance owner:

db2 UPDATE DBM CFG USING JDK_PATH /opt/IBMJava2-142 db2 UPDATE ADMIN CFG USING JDK_PATH /opt/IBMJava2-142

Surprisingly, my installation didn't have Mozilla installed by default. To have the DB2 UDB help display properly, Mozilla should be installed using YaST.