topic Re: "no locks available" issue with HP 11.0 in Operating System - HP-UX

"no locks available" issue with HP 11.0

Dave_375 — Thu, 12 Feb 2004 10:11:34 GMT

I have a server which is expoeriencing frequent situations where jobs/commands fail with error messages relating to file locks. Some examples are:
when running bdf I get "bdf: Cannot open /etc/mnttab: No locks available" and when running kmtune "kmtune: Cannot establish mutual exclusive lock". This si a system-wide problem that occurs for all users. Has anyone experienced this?

Dave Knoch
Borders Group Inc

Re: "no locks available" issue with HP 11.0

A. Clay Stephenson — Thu, 12 Feb 2004 10:16:04 GMT

If sounds as though nflocks is too small. You will need to increase it and gen a new kernel.

Re: "no locks available" issue with HP 11.0

Jeff Schussele — Thu, 12 Feb 2004 10:18:05 GMT

I too believe you nflocks kernel parm is the culprit here.

Rgds,
Jeff

Re: "no locks available" issue with HP 11.0

Helen French — Thu, 12 Feb 2004 10:24:57 GMT

This will be a Kernel parameter issue as pointed out. Check tunable parameters values and increase it to a desired limit and regenerate a new kernel (from SAM). Check these parameters:

nflocks
nproc
nfile
ninode