Message Oracle TNS-00039 - INTCTL: error while spawning a process

ERRORINTCTL: error while spawning a process
CAUSEAn error was encountered while spawning a process due to an internal operating system dependent problem. Machine resources may be limited.
ACTIONRetry command. Check permissions on Interchange executables and the current setting of the search path. If necessary, terminate other applications to free up machine resources. If the error persists, contact Oracle Customer Support.