Table of Contents


  1. About the Security Guide
  2. Introduction to Informatica Security
  3. User Authentication
  4. LDAP Security Domains
  5. Kerberos Authentication
  6. Domain Security
  7. Single Sign-on for Informatica Web Applications
  8. Security Management in Informatica Administrator
  9. Users and Groups
  10. Privileges and Roles
  11. Permissions
  12. Audit Reports
  13. Command Line Privileges and Permissions
  14. Custom Roles
  15. Default List of Cipher Suites

Increasing System Memory for Many Users

Increasing System Memory for Many Users

Processing time for an Informatica domain restart, LDAP user synchronization, and some infacmd and infasetup commands increases proportionally with the number of users in the Informatica domain.
The number of users affects the processing time of the following commands:
  • infasetup BackupDomain, DeleteDomain, and RestoreDomain
  • infacmd isp ExportDomainObjects, ExportUsersandGroups, ImportDomainObjects, and ImportUsersandGroups
  • infacmd oie ExportObjects and ImportObjects
You may need to increase the system memory used by Informatica Services, infasetup, and infacmd when you have a large number of users in the domain. To increase the maximum heap size, configure the following environment variables and specify the value in megabytes:
  • INFA_JAVA_OPTS. Determines the maximum heap size used by Informatica Services. Configure on each node where Informatica Services is installed.
  • ICMD_JAVA_OPTS. Determines the maximum heap size used by infacmd. Configure on each machine where you run infacmd.
  • INFA_JAVA_CMD_OPTS. Determines the maximum heap size used by infasetup. Configure on each machine where you run infasetup.
For example, to configure 2048 MB of system memory on UNIX for the INFA_JAVA_OPTS environment variable, use the following command:
setenv INFA_JAVA_OPTS "-Xmx2048m"
On Windows, configure the variables as system variables.
The following table lists the minimum requirement for the maximum heap size settings, based on the number of users and services in the domain:
Number of Domain Users
Maximum Heap Size
(1-5 Services)
Maximum Heap Size
(6-10 Services)
1,000 or less
512 MB (default)
1024 MB
2048 MB
3072 MB
3072 MB
5120 MB
5120 MB
6144 MB
5120 MB
6144 MB
The maximum heap size settings in the table are based on the number of application services in the domain.
After you configure these environment variables, restart the node for the changes to take effect.

Updated October 10, 2019