How do I use Spfile backup?

You can use RMAN to backup an SPFILE, or back them up yourself. Remember that a PFILE is simply a text based file, which means you can copy it to another directory without affecting the Oracle instance. This is the easiest way to backup a PFILE. To back up an SPFILE, you will first want to convert it to a PFILE.

Does RMAN backup Spfile?

BACKUP DEVICE TYPE sbt SPFILE; The SPFILE that is backed up is the one currently in use by the instance. If the instance is started with a client-side initialization parameter file, then RMAN does not back up anything when this command is used.

What is Spfile and Pfile?

SPFILE is a binary file that contains the same information as the old PFILE. SPFILE permits dynamic changes without requiring you to restart that instance. If you choose to use the traditional text initialization parameter file (PFILE), you must specify the PFILE clause when issuing the STARTUP command.

How do I backup my Oracle controls?

Backing Up Control Files

  1. Back up the control file to a binary file (duplicate of existing control file) using the following statement: ALTER DATABASE BACKUP CONTROLFILE TO ‘/oracle/backup/control.
  2. Produce SQL statements that can later be used to re-create your control file: ALTER DATABASE BACKUP CONTROLFILE TO TRACE;

How do I know if my database is using Pfile or Spfile?

Another way to find would be set the parameter with scope=spfile, if database was started with spfile one will be able to set the value if it’s started with pfile you will see the “ORA-32001: write to spfile requested but no SPFILE specified at startup”.

How do I edit Spfile when database is down?

In order to modify the spfile in oracle database, do one of the following:

  1. Use the ALTER SYSTEM command to modify the SPFILE currently in use. To determine if an spfile is being used: SQL> select value from v$parameter where name=’spfile’
  2. Use the export method. Export the SPFILE to a PFILE.

What is meaning of recover database using backup controlfile until cancel?

RECOVER DATABASE UNTIL CANCEL USING BACKUP CONTROLFILE. Note: If you fail to specify the UNTIL clause on the RECOVER command, then you will not be able to open the database until a complete recovery is done.

How do I backup an entire database in Oracle 11g?

Backing Up the Database

  1. On Windows: Click Start, point to Programs (or All Programs), point to Oracle Database 11g Express Edition, and then select Backup Database.
  2. On Linux with Gnome: In the Applications menu, point to Oracle Database 11g Express Edition, and then select Backup Database.

How can I tell if Oracle is using Pfile or Spfile?

We can learn the parameter file in which the database is opened by querying the spfile and pfile parameter value. If both the spfile and the pfile file exist under the $ORACLE_HOME/dbs directory, the database will automatically open with the spfile if no parameter file is specified during startup.

How do I generate a Spfile from Pfile?

A SPFILE is created from a PFILE using one of the following commands. SQL> CREATE SPFILE FROM PFILE = ‘$ORACLE_HOME/dbs/my_pfile. ora’; SQL> CREATE SPFILE = ‘$ORACLE_HOME/dbs/my_spfile. ora’ FROM PFILE = ‘$ORACLE_HOME/dbs/my_pfile.

How do I backup my current control file?

RMAN – Backing Up the Control File A backup of the control file can be created using RMAN as follows: RMAN> backup current controlfile; Using the above command, a new backup set is created and the control file is backed up.

How do I create a control file without backup?

To create a new control file:

  1. Start the database in NOMOUNT mode.
  2. Create the control file with the CREATE CONTROLFILE statement, specifying the NORESETLOGS option (refer to Table 18-2 for options).
  3. Recover the database as normal (without specifying the USING BACKUP CONTROLFILE clause): RECOVER DATABASE.

How to back up and restore the Oracle control file and spfile?

There is no need to name a new policy “autobackup” for example, but keep in mind that the first available policy (alphabetically) that has an open window and supports Oracle backups and this host will be used for the backup. Keepin mind that the RMAN config parameters used for backup must also be used for restore.

What happens when I enable auto backup for spfile?

The default behavior when you enable auto backup is NOT to backup SPFILE in RMAN backup pieces. To overwrite this behavior, this RMAN statement will create backup piece for SPFILE and implicitly create an auto backup on disk as configured in previous step.

How to restore an oracle ASM file from a backup?

In the event that the current Oracle ASM SPFILE file in a disk group has been corrupted or that disk group is not accessible, you can use spsetor spcopywith the -uoption to restore the Oracle ASM SPFILE file using the backup copy that you have previously created.

How to restore spfile to original DB name?

So simply recover to a different location and do “cp”. restore spfile to pfile ‘ ’ from autobackup db_recovery_file_dest=’+ARCDG’ db_name=’ ’; restore spfile to ‘ from ‘ ’;

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