ORA-00471: DBWR process terminated with error


Sometimes you can get ” ORA-00471: DBWR process terminated with error ” error.

Details of error are as follows.

ORA-00471: DBWR process terminated with error

Cause: The database writer process died
Action: Warm start instance
To solve the problem, please execute the following steps:

Reduce the database db_files parameter to reduce file descriptors usage (requires a database restart)


Increase the number of file descriptors value specific to your UNIX kernel ( File descriptor limit is per process.)

 set kernel.shmmax to 4G

The latest solution is startup or restart instance again.


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



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.

Leave a Reply

Your email address will not be published. Required fields are marked *