Dbwr trace file oracle

Connected to an idle instance. All forum topics Previous Topic Next Topic. Honored Contributor. ORA Cause: The background process was either unable to find one of the data files or failed to lock it because the file was already in use. The database will prohibit access to this file but other files will be unaffected.

However, the first instance to open the database will need to access all online data files. The accompanying error from the operating system describes why the file could not be identified. Action: At the operating system level, make the file available to the database. Are you sure the DBCA, delete datafile operation was sucessfully over?

If yes, it seems that you are starting the Oracle instance with a old control file. Since this control has information for the deleted datafile, it is asking for the datafile and hence not able to open the database. A flexible mind is generally unsure, but often right. Esteemed Contributor. The other files will not be affected, but it is important to know that opening the database using the first instance will need to use online data files.

Burleson is the American Team Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals. Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise.

All legitimate Oracle experts publish their Oracle qualifications. For example:. The steps involved are:. Recreate all the previously existing objects in the tablespace. This can be done using the creation scripts for the objects in that tablespace or using the recent export dump available for that tablespace objects. In many situations, recreating the user tablespace is impossible or too laborious. The solution then is to restore the lost datafile from a backup and do media recovery on it.

These are the steps:. This will list all your online redolog files and their respective sequence and first change numbers. Just keep in mind that all the logs to applied will be online logs, and move on to step 5.