Before you can install IBM® Business Automation
Workflow,
you must prepare your AIX® operating system.
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. Business Automation Workflow does not support
different operating systems in the same cell, for example AIX 7.1 on one node and AIX 7.3 on another
node. All nodes must use the same operating system.
Refer to the following technote for more
preparation information for configuring IBM Installation
Manager to run on 64-bit AIX
systems: Installation Manager graphical environment issues.
Procedure
Complete the following steps on your AIX system
before installing Business Automation Workflow:
-
Because WebSphere®
Application Server is a
prerequisite of Business Automation Workflow,
complete the required preparation steps in the Preparing AIX systems for installation topic in the WebSphere
Application Server documentation.
Note: Make sure the X Window System (X11) is installed.
-
Increase the maximum number of open files and the maximum file size. The default settings are
not enough. You can check the current maximum number of open files by using
ulimit
-n
and the current maximum file size by using ulimit -f
. The following
example shows the maximum number of open files increased to 8800 and the maximum file size to
6291453, 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 commands:
ulimit -n 8800
ulimit -f 6291453
Alternatively, you can use the following steps to edit the resource limits file:
-
Open /etc/security/limits.
-
Edit or add the default section and include these lines:
nofiles = 8800
fsize = 6291453
-
Save and close the file.
-
Log off from the operating system and log in again.
- Set the umask value to 077 using the
following command:
The value 077 is the most restrictive value that
Business Automation Workflow tolerates. You can
optionally choose to set a less restrictive
umask value for the following
access levels:
- 037 for read-only access for a group of human administrators and tools
- 027 for read and write access for a group of human administrators and tools
- 007 for read, write, and execute access for a group of human administrators and tools
-
If you plan to install interactively, ensure that you have a supported version of Mozilla
Firefox installed.
- Before starting the data movement service, increase the number of processes that are
configured in the AIX operating system to avoid a connection reset error. You can increase the
number of processings by using a command, or by using the AIX interface.
- Complete the steps in Tuning AIX systems.
- Ensure all servers that are involved are set to the same time. Use the same network time
protocol for all servers on all cluster nodes, including application, support, and database
clusters. A time mismatch causes erratic behavior, including duplicate system tasks.