Hi, We have installed an Oracle 9iAS on IBM 630 (5L). Then, I sometimes found the message: "ksh: 0403-030 The fork function failed. Too many processes already exist." I believe that the oracle user fork too many processes. According to the output of "lsattr -El sys0", the maxuproc is 128 which I believe is too small. Is anyone can tell me how to increase the limit or other suggestion? Thanks a lot Timothy Lee

128 is way too low. Check your Oracle documentation for the recommended setting. Change it as follows: chdev -l sys0 -a maxuproc= Also, go into /etc/security/limits and check the limits for user oracle (or whatever user you run Oracle as) and make the appropriate changes there. Do a man ulimit. AIX does ulimits a little differently than other versions of Unix. The command to change the /etc/security/limits file is: chsec -f /etc/security/limits -s -a = Do a man on chsec. I recommend you not edit the file directly, the command insures you don't hose up a stanza in the file. Hope this helps Jerry