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# Set this to 1024 or higher on production systems
kernel.msgmni = 128
3.4.2. Installing DB2 and creating instances on Red Hat
Follow the instructions in Section 4, the generic section on installing DB2 and creating instances.
3.4.3. After installing DB2 on Red Hat
Red Hat 7.1 enabled the floating point stack feature of the glibc library. Unfortunately, this causes Java programs using IBM JDK 1.1.8, including the DB2 Control Center, to fail miserably. Fortunately, you can disable the floating point stack by setting the LD_ASSUME_KERNEL environment variable to 2.2.5 before running the DB2 Control Center as follows: bash$ export LD_ASSUME_KERNEL=2.2.5
bash$ db2jstrt 6790
bash$ db2cc 6790
With IBM JDK 1.3 (IBMJava2-SDK-1.3-7.0-i386.rpm), the DB2 Control Center started successfully without any workarounds. For instructions on installing the IBM JDK, see Section 11.
3.5. SuSE Linux
3.5.1. Before installing DB2 on SuSE
At some point in its past, SuSE included an old beta version of DB2 in their distribution. When you install SuSE Linux, up to and including version 7.0, the SuSE installer still creates the default DB2 user IDs and sets their home directories in /usr/lib. This can cause some difficulties when you set up the DB2 instances. Before installing DB2, remove the default DB2 user IDs by issuing the following commands as root: bash# userdel -r db2as
bash# userdel -r db2fenc1
bash# userdel -r db2inst1
3.5.2. Installing DB2 and creating instances on SuSE
Follow the instructions in Section 4, the generic section on installing DB2.
3.5.3. After installing DB2 on SuSE
With SuSE 6.2 or above, I have not needed to take any special steps after installing DB2 Version 7.1. It just works—and that's nice.
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