Installation for PowerCenter and Data Quality

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Verify the File Descriptor Limit

Verify that the operating system meets the file descriptor requirement.

Informatica service processes can use a large number of files. To prevent errors that result from the large number of files and processes, you can change system settings with the limit command if you use a C shell, or the ulimit command if you use a Bash shell.

List Operating System Settings

To get a list of the operating system settings, including the file descriptor limit, run the following command:

With C shell, run

limit

With Bash shell, run

ulimit -a

Set the File Descriptor Limit

Informatica service processes can use a large number of files. Set the file descriptor limit per process to 16,000 or higher. The recommended limit is 32,000 file descriptors per process.

To change system settings, run the limit or ulimit command with the pertinent flag and value. For example, to set the file descriptor limit, run the following command:

With C shell, run

limit -h filesize <value>

With Bash shell, run

ulimit -n <value>

Set Max User Processes

Informatica services use a large number of user processes. Use the ulimit -u command to adjust the max user processes setting to a level that is high enough to account for all the processes required by the Blaze engine.

To set the max user processes, run the following command: Run the following command to set the max user processes setting:

With C shell, run

limit -u processes <value>

With Bash shell, run

ulimit -u <value>

Verify System Requirements

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