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тАО06-27-2005 03:10 AM
тАО06-27-2005 03:10 AM
couldn't fork child process: not enough memory
diskstats: open failed: couldn't fork child process: not enough memory
The server has either 6 or 8 GB of which only about half is allocated to Oracle instances. What does this mean? Is there a kernal parameter that needs to be changed?
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тАО06-27-2005 03:16 AM
тАО06-27-2005 03:16 AM
Re: couldn't fork child process: not enough memory
swapinfo -mat
glance -m
vmstat (check free column)
Anil
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тАО06-30-2005 06:47 AM
тАО06-30-2005 06:47 AM
Re: couldn't fork child process: not enough memory
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тАО06-30-2005 06:55 AM
тАО06-30-2005 06:55 AM
Re: couldn't fork child process: not enough memory
Do a man 2 fork and you will see when it sets errno = ENOMEM. You are almost certainly running out of virtual memory -- you need more swap space or better you need to reduce the load --- smaller SGA's. Do a vmstat and look at the pageout rate; if it's significant then you need to add more memory or reduce the SGA's. Until you can get more memory (even if you add more swap) you really need to reduce the SGA's because the overhead of having to go to the disks more often for database i/o is trivial (by a factor of 100) to the overhead of having to page.
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тАО06-30-2005 07:32 AM
тАО06-30-2005 07:32 AM
Re: couldn't fork child process: not enough memory
Check swapinfo and make sure that your box is configured with at least 2xRAM worth of disk swap (the general recommendation from HP).
Best regards,
Oz
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тАО06-30-2005 08:11 AM
тАО06-30-2005 08:11 AM