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Preparing AIX systems for installation

Before you can install IBM BPM, you must prepare your AIX operating system.

Before you begin

Because WebSphere Application Server is a prerequisite of IBM BPM, you must complete the required preparation steps in the Preparing AIX systems for installation topic in the WebSphere Application Server information center.

About this task

Because certain steps are specific to a version of the operating system, all steps might not apply to your environment. If no qualifier is provided for a particular step, complete the step for all versions of the operating system.

Refer to the following technote for additional preparation information for configuring Installation manager to run on 64-bit AIX systems: https://www-304.ibm.com/support/docview.wss?uid=swg21330190&wv=1 .

Procedure

Complete the following steps on your AIX system before installing IBM BPM:

1. Increase the maximum number of open files. The default setting is usually not enough. You can check your current maximum number of open files by using ulimit -n. The following example shows the maximum number of open files being increased to 8800, which is large enough for most systems. The ulimit requirement is dynamically calculated at installation time and might need to be larger based on the options you select.

   Before installing, run the following command:

   • ulimit -n 8800

   Alternatively, you can use the following steps to edit the resource limits file:

   1. Open /etc/security/limits.

   2. Edit or add the default section and include this line:

      • nofiles = 8800

   3. Save and close the file.

   4. Log off from the operating system and log in again.

2. Set the umask value to 022 using the following command:

   • umask 022

3. Ensure that you have Mozilla Firefox installed at version 3.5.x.x or higher.

4. Before starting the data movement service, increase the number of processes configured in the AIX operating system to avoid a connection reset error. You can increase the number of processing using a command, or using the AIX interface.

   • Run the command:

     chdev  -l sys0 -a maxuproc='256' 
     

   • In the AIX interface, enter smitty, then select System Environments > Change / Show Characteristics of Operating System > Number of processes allowed per user(Num.).

5. Complete the steps in Tuning AIX systems.

Related tasks:

Preparing AIX systems for installation
Tuning AIX systems