Questions

How do I restore my ASM Controlfile?

by Author

How do I restore my ASM Controlfile?

You have to stop database and you can do that.

  1. Stop Database. SQL> shutdown immediate;
  2. Migrate Controlfile. RMAN> restore controlfile to ‘+DATA’ from ‘/tmp/controlfile_currentlocation.ctl’;
  3. Show Location Of New Control Files. ASMCMD> find -t controlfile .
  4. Change Parameter For New Locations.
  5. Restart Database.

How do I restore a Controlfile to a different location?

One way to restore the control file to one or more new locations is to change the CONTROL_FILES initialization parameter, and then use the RESTORE CONTROLFILE command with no arguments to restore the control file to the default locations.

How do I restore my standby Controlfile?

Method 1 – Normal Restore and Recovery using RMAN

  1. Perform the backup of the ASM primary database ( Datafiles, Controlfile for standby & Archivelogs )
  2. Make the backup pieces available on the Standby server:
  3. Create the parameter file & password file on standby.
  4. Configure Oracle net services on both the servers.

How do I restore from tape backup?

Restore the database from tape backup of the Database

  1. copy the tape backup of the database to disk.
  2. create the init.ora file.
  3. create the password file.
  4. start the instance in nomount.
  5. restore the spfile from autobackup spfile backup piece.
  6. shutdown immediate.
  7. startup nomount.
  8. RESTORE CONTROLFILE FROM AUTOBACKUP;
READ ALSO:   How many reps should I do on leg extension?

How do I transfer files from ASM to filesystem?

How to move a datafile from ASM to the file system

  1. Shutdown and mount the database.
  2. Ensure you have enough space on the file system to copy the datafile.
  3. Connect to RMAN and copy the datafile from the ASM diskgroup to the filesystem.
  4. Update the controlfile with the new location of the datafile.

How do I restore ASM Diskgroup?

  1. Step 1: Ensure that you have a prior RMAN backup of all databases using ASM.
  2. Step 2: Shutdown your ASM instance(s)
  3. Step 3: Re-create your ASM disk group(s)
  4. Step 4: Restore database.

How do I move Controlfile?

To move or rename a controlfile do the following.

  1. Alter the control_files parameter using the ALTER SYSTEM comamnd.
  2. Shutdown the database.
  3. Rename the physical file on the OS.
  4. Start the database.

How do I restore an old RMAN backup?

Before you start the RMAN restore process, do the following:

  1. Set the DBID. You can get the dbid from the name of the control file.
  2. Startup the database in nomount option.
  3. Restore the controlfile form the backup.
  4. After restoring the control file, mount the database.
READ ALSO:   How did politics impact the Cold War?

How do I use standby backup to restore primary DB?

Use following steps to restore physical standby backup to create a new physical standby database. Step 1: Create the directory on the server for the restoration process of RMAN. Step 2: Transfer backup. Step 3: Transfer spfile and password file to a new server.

Can we take backup of standby database?

A Standby Database can be backed up even when Recovery is in progress. The ArchiveLogs at the Standby can also be backed up. The controlfile backup at a Standby is marked as a Standby Control File.

How do I restore my Datafile?

How to recover missing datafiles?

  1. Find the missing datafiles:
  2. Take tablespace or datafiles offline:
  3. Rename missing datafiles with original files:
  4. Shutdown and mount the database:
  5. Perform media recovery:
  6. Open the database:
  7. check the status of datafiles:
  8. Bring the datafiles online:

How do I restore a SQL backup?

Just follow the instructions:

  1. Connect to your SQL Server and right-click on the “Databases” directory and choose “Restore Database”
  2. Click the button beneath the “Source” section next to “Device”
  3. In the “Select backup device” press “Add”
  4. Select the backup file or files (.bak) you are going to restore, then click “OK”

How do I restore my control file from an autobackup?

If you are not using a recovery catalog, you must restore your control file from an autobackup. If you want to restore the control file from autobackup, the database must be in a NOMOUNT state. You must first set the DBID for your database, and then use the RESTORE CONTROLFILE FROM AUTOBACKUP command:

READ ALSO:   What happens if I forgot to sell intraday shares?

How does the control file autobackup work in RMAN?

RMAN uses the autobackup format and DBID to determine where to hunt for the control file autobackup. If one is found, RMAN restores the control file from that backup to all of the control file locations listed in the CONTROL_FILES initialization parameter.

How do I restore the spfile from the autobackup?

If you have configured control file autobackups, the SPFILE is backed up with the control file whenever an autobackup is taken. If you want to restore the SPFILE from the autobackup, you must first set the DBID for your database, and then use the RESTORE SPFILE FROM AUTOBACKUP command.

How do I restore the control file from the recovery catalog?

The recovery catalog contains a complete record of your backups, including backups of the control file. Therefore, you do not have to specify your DBID or control file autobackup format. To restore the control file, connect RMAN to the target database and the recovery catalog, and bring the database to NOMOUNT state.

https://www.youtube.com/watch?v=q9Pdq9dj4n4