By default, Informatica uses a maximum of 512 MB of system memory.
If the domain has more than 1,000 users, update the maximum heap size based on the number of users in the domain.
You can use the INFA_JAVA_OPTS environment variable to configure the amount of system memory used by Informatica. For example, to configure 1 GB of system memory for the Informatica daemon in a C shell, use the following command:
setenv INFA_JAVA_OPTS “-Xmx1024m”
Restart the node for the changes to take effect.