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  1. Installation Overview
  2. Before You Install the Services
  3. Service Installation
  4. After You Install the Services
  5. Client Installation
  6. Uninstallation
  7. Starting and Stopping Informatica Services
  8. Connecting to Databases from Windows
  9. Connecting to Databases from UNIX
  10. Updating the DynamicSections Parameter of a DB2 Database
  11. Installation and Configuration Checklist
  12. Split Domain Configuration for Metadata Manager

Installation and Configuration Guide

Installation and Configuration Guide

Set the File Descriptor Limit

Set 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.
To get a list of the operating system settings, including the file descriptor limit, run the following command:
C Shell
limit
Bash Shell
ulimit -a
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:
C Shell
limit -h filesize <value>
Bash Shell
ulimit -n <value>
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 Blaze. Depending on the number of mappings and transformations that might run concurrently, set the file descriptor limit per process to 16,000 or higher.
Run the following command to set the max user processes setting:
C Shell
limit -u processes <value>
Bash Shell
ulimit -u <value>