ORA-02391 Exceeded simultaneous session_per_user limit

I got ” ORA-02391 Exceeded simultaneous session_per_user limit ”  error in Oracle database.

 

ORA-02391 Exceeded simultaneous session_per_user limit

 

Details of error are as follows.

ORA-02391:   exceeded simultaneous SESSIONS_PER_USER limit

Cause:   An attempt was made to exceed the maximum number of concurrent sessions allowed by the SESSIONS_PER_USER clause of the user profile.

Action:   End one or more concurrent sessions or ask the database administrator to increase the SESSIONS_PER_USER limit of the user profile.
   

 

 

exceeded simultaneous SESSIONS_PER_USER limit

This ORA-02391 errors are related with the attempt was made to exceed the maximum number of concurrent sessions allowed by the SESSIONS_PER_USER clause of the user profile.

 

The owner of the job is assigned to unlimited SESSIONS_PER_USER profile:

SQL> select profile from dba_users where username = 'USER1';

PROFILE
------------------------------
APPLICATION_USER


SQL> select PROFILE, RESOURCE_NAME, RESOURCE_TYPE, LIMIT from dba_profiles where PROFILE = 'APPLICATION_USER'

PROFILE              RESOURCE_NAME            RESOURCE_TYPE   LIMIT
-------------------- ------------------------ --------------- ---------------
APPLICATION_USER     COMPOSITE_LIMIT          KERNEL          DEFAULT
APPLICATION_USER     SESSIONS_PER_USER        KERNEL          UNLIMITED

 

End one or more concurrent sessions or ask the database administrator to increase the SESSIONS_PER_USER limit of the user profile.

 

1. Assign SYS a profile with sufficient SESSIONS_PER_USER, e.g. unlimited

OR

2. Increase SESSIONS_PER_USER for the profile assigned to SYS, until errors are no longer reported

 

Check your user limit as follows.

select PROFILE, LIMIT from dba_profiles WHERE RESOURCE_NAME = 'SESSIONS_PER_USER' AND PROFILE = 'PROFILE_NAME';

 

SESSIONS_PER_USER Parameter

Then you can limit the profile’s limit as follows.

alter profile PROFILE_NAME limit SESSIONS_PER_USER 150;

 

 

 

Do you want to learn Oracle Database for Beginners, then read the following articles.

Oracle Tutorial | Oracle Database Tutorials for Beginners ( Junior Oracle DBA )

 

About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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