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ORA-27300 OS system dependent operation fork failed with status 11, ORA-27301 and ORA-27302 After Increasing Processes Parameter (Doc ID 1229767.1)

Last updated on JULY 05, 2023

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2]
Oracle Solaris on SPARC (64-bit)


The below errors are received in alert.log
o Errors received after changing the following:
  - processes parameter from 1200 to 5000
  - parallel_max_servers from  500 to 3072
  - parallel_min_processes increased from  256 to 1024

o Can occur in both stand alone and RAC instances
o Top shows no concerns with memory or CPU.
o You have restarted the database(s) and no effect

The following kernel settings were checked:
project.max-lwps is set to default which is 2 billion.





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