Thanks everyone for your prompt responses.
This problem was as I suspected a memory problem. This was masked
because we have many machines running the exact same processes and this
has the most memory. However, it turned out to have the least swap
space of them all.
swap -l and swap -s proved that swap was indeed the problem.
so I did this:
mkfile 100m /opt/swap.file
swap -a /opt/swap.file
which added a 100 meg swapo file to the system.
I also added this file to the vfstab so that it would be mounted at
Incidentally I was able to find the process that was using all the swap
using ps -aefl. It just so happens that this program preferrs to swap
instead of using sun swap, but the parameters were set such that solaris
swapping before memory usage reached the programs swap threshold. SO, I
lowered this value in addition to creating the swap file.
Thanks again for the help!
> Can anyone tell me what tunable parameters effect forking?
> I am running Solaris2.5.1 and I keep
> getting cannot fork errors when trying to start new processes.
> Unfortunately we have no admin here, and no one else here has a
> clue how to fix this. I suspect memory problems, but I am not sure.
> If you need more info. just ask...no problem.
> Thanks! I will summarize.
> Roger McGraw
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