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Normally, Oracle does not propagate the adding of datafiles on the primary database to the standby database. This must be done manually on the standby database.

Dbvisit Standby will automatically add the datafile to the standby database. Dbvisit Standby version 6.0.26 and later, will attempt to generate a new name for a standby datafile, in case the primary name cannot be used due to different storage type (ASM and non ASM) or different database file structure between the primary and standby.

There are some restrictions to automatically adding the datafiles to the standby database.

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Note 1: There must be sufficient space on the standby server for Dbvisit Standby to add the datafile. If there is not sufficient space, then Oracle will generate an error message which will be captured by Dbvisit Standby and an alert will be sent.

Note 2: This feature is independent of the Oracle parameter STANDBY_FILE_MANAGEMENT. Dbvisit Standby will detect if STANDBY_FILE_MANAGEMENT has added the datafile to the standby database, and if so, Dbvisit Standby will not add the datafile.

Note 3: STANDBY_FILE_MANAGEMENT can only be used in Enterprise Edition and should not be set in Standard Edition.

Note 4: Version 6.0.40 and earlier do not support adding more than one datafile per dbvisit run. so if multiple datafiles are to be added then it should be done as follows:
1. Add datafile
2. Run Dbvisit Standby on the primary
3. Add second datafile
4. Run Dbvisit Standby on the primary again
5. Repeat process for each additional datafile to be added

 

Every time Dbvisit Standby runs on the primary, it takes a snapshot of primary datafile ids and names and saves it in the repository.

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Dbvisit Standby can by default only add a maximum of 10 data files per session.  This is controlled by the MAX_DATAFILES_TO_ADD parameter that can be set in the Dbvisit Database Configuration File (DDC)

 

When Using ASM

If the Standby database is making use of ASM, using OMF (Oracle Managed Files) is recommended.  

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If ASM is used on the standby database for database storage, datafiles on the standby database will be created as Oracle Managed Files (OMF).

 

If a new datafile was added to the primary database the same process will be followed as mentioned above where the "datafiles_ORACLE_SID_DEST.txt" file is used, but if the standby database is making use of ASM and OMF is enabled - db_create_file_dest is set to a specific disk group - the standby database datafiles will be added as OMF files.  (Aliases will not be used).