LOG: could not fork new process for connection: Cannot allocate memory

[Ahsan Ali <ali95695@xxxxxxxxx>]

Hi Support

I having my production server service intruption because of this "Cannot allocate memory" error in the db log. 

because of this error even DBA's cant login to the db server unless we kill one of the existing sessions. Please help me resolve this issue.

1. $ grep Commit /proc/meminfo
2. CommitLimit:    133625220 kB
3. Committed_AS:   82635628 kB
4.  
5.  
6. $ cat /proc/sys/vm/overcommit_memory
7. 2
8.  
9.  
10.  
11. $ free -m -g
12.              total       used       free     shared    buffers     cached
13. Mem:           252        238         13          0          0        175
14. -/+ buffers/cache:         62        189
15. Swap:            7          0          7