Jimit Amin wrote:
> I have heavy transaction load production database 9.3 PPAS .Today Database is 
> not able to give new
> process. I checked pg_stat_activity , there are so many transaction in 
> waiting stage because of one
> procedure and lock on one table (Code inside procedure)
[...]

>   could not fork new process for connection: Resource temporarily unavailable
>   could not fork new process for connection: Resource temporarily unavailable
>   could not fork autovacuum worker process: Resource temporarily unavailable
>   could not fork new process for connection: Resource temporarily unavailable
>   could not fork new process for connection: Resource temporarily unavailable

Your machine is running out of system resources needed to create new processes.

This might help:
http://stackoverflow.com/questions/12079087/fork-retry-resource-temporarily-unavailable

Yours,
Laurenz Albe

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