My Oracle Support Banner

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

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Standard Edition - Version and later
Oracle Database - Enterprise Edition - Version to [Release 10.2]
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 C:\ORACLE\ADMIN\FPRD\diag\rdbms\fprd\fprd\trace\fprd_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.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.