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Ora-27300: OS System Dependent Operation:Createthread Failed With Status: 8 (Doc ID 1310453.1)

Last updated on FEBRUARY 02, 2022

Applies to:

Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Schema Service - Version N/A and later
Microsoft Windows x64 (64-bit)
Microsoft Windows (32-bit)


Running version, Generic RDBMS

When attempting to connect with more than 150 users,
the following error occurs.

User connection error ora-12518

Found follwoing error in alert log and user connection was almost 150 sessions.

Wed Mar 02 15:16:35 2011
Process startup failed, error stack:
Errors in file <PATH>\<SID>_psp0_2744.trc:
ORA-27300: OS system dependent operation:CreateThread failed with status: 8
ORA-27301: OS failure message: Not enough storage is available to process this command.
ORA-27302: failure occurred at: ssthrddcr

Due to this issue, no more sessions can be created


When max number of sessions is more than 150.


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