Swap Space Errors

To ensure proper operation, it is important to configure enough swap space on your messaging system. The amount of required swap space will vary depending on your configuration. A general tuning recommendation is that the amount of swap space should be at least three times the amount of main memory.

An error message such as the following indicates a lack of swap space:

jbc_channels: chan_execute [1]: fork failed: Not enough space

You might see this error in the Job Controller log file. Other swap space errors will vary depending on your configuration.

Use the following commands to determine how much swap space you have left and determine how much you have used:

• Solaris systems: swap -s (at the time MTA processes are busy), ps -elf, or tail /var/adm/messages

• HP-UX systems: swapinfo or tail /var/adm/syslog/syslog.log