Preparing Linux systems for installation

Before you can install WSRR, you must prepare your Linux operating system.

1. Install the following packages for your operating system:

   Option	Description
   Red Hat Enterprise Linux 5	compat-libstdc++-33-3.2.3-61 compat-db-4.2.52-5.1 libXp-1.0.0-8 rpm-build-4.4.2-37.el5 64-bit kernel only: compat-libstdc++-296-2.96-138 glibc.i686
   Red Hat Enterprise Linux 6	ksh.rpm Korn shell 64-bit kernel only: glibc.i686
   SUSE Linux Enterprise Server 9.0	XFree86-libs-32bit-9 glibc-32bit-9 glib-32bit-9 gtk-32bit-9

   You can also install a later release of any of these packages. You can install the required packages using a single command, as shown in the example.
2. For Red Hat Enterprise Linux 6 (64-bit), follow the instructions in the technote Unable to install Installation Manager on RHEL 6.0 (64-bit) to prepare your system for installing Installation Manager.
3. On Red Hat Enterprise Linux 5 systems, disable SELinux, or set it to a permissive mode.
4. Configure shared memory by completing the following steps:
   1. Add the following lines to the end of /etc/security/limits.conf:

      # - stack - max stack size (KB)
      * soft stack 32768
      * hard stack 32768
      # - nofile - max number of open files
      * soft nofile 65536
      * hard nofile 65536
      # - nproc - max number of processes
      * soft nproc 16384
      * hard nproc 16384

   2. If you intend to use a DB2® or DB2 Express® database, edit /etc/sysctl.conf. The following examples shows typical settings to add for a system with 16 GB of RAM:

      kernel.shmmni=4096
      kernel.shmmax=4294967296
      kernel.shmall=8388608
      #kernel.sem=<SEMMS><SEMMNS><SEMOPM><SEMMNI
      kernel.sem=250 256000 32 4096
      kernel.msgmni=16384
      kernel.msgmax=65536
      kernel.msgmnb=65536

5. Restart the computer.