How do I clone a database using RMAN duplicate?

How do I clone a database using RMAN duplicate?

Use RMAN to copy/clone a database

1. Step 1 – Create a password file for the auxiliary instance.
2. Step 2 – Configure auxiliary instance listener net configuration.
3. Step 4 – Startup auxiliary instance in NOMOUNT mode.
4. Step 5 – Backup the production database and copy all backup files to auxiliary server.

What is duplicate database?

A duplicate database, which is a copy of the source database (or a subset of the source database) with a unique DBID. Because a duplicate database has a unique DBID, it is independent of the source database and can be registered in the same recovery catalog. Typically, duplicate databases are used for testing.

What is RMAN duplicate?

RMAN has the ability to duplicate, or clone, a database from a backup or from an active database. It is possible to create a duplicate database on a remote server with the same file structure, a remote server will a different file structure or the local server with a different file structure.

What does the Duplicate command do?

Use the DUPLICATE command to create a copy of a source database. RMAN can create either of the following types of databases: A duplicate database, which is a copy of the source database (or a subset of the source database) with a unique DBID.

What is RMAN duplicate command?

The RMAN duplicate command is used to restore a backup set or image copy, the DUPLICATE command can be used. The duplicate command always performs a complete restoration of the target database. Using this command, a database can be restored on the local host sharing with the target database or on remote host.

What are the 4 commands to duplicate?

Commands for Duplicating Objects

• ADDSELECTED (Command)
• COPY (Command)
• COPYBASE (Command)
• COPYCLIP (Command)
• MIRROR (Command)
• NCOPY (Command)
• PASTEBLOCK (Command)
• PASTECLIP (Command)

How to duplicate a database using RMAN in Oracle?

DUPLICATE TARGET DATABASE TO DB11G SPFILE NOFILENAMECHECK; # Backup files are in matching location to that on the source server. # Backup state (no TARGET or CATALOG) DUPLICATE TARGET DATABASE TO DB11G SPFILE BACKUP LOCATION ‘/source/app/oracle/fast_recovery_area/DB11G’ NOFILENAMECHECK; # Duplicate database to TARGET’s state 4 days ago.

How does RMAN automates the duplicating process?

As part of the duplicating operation, RMAN automates the following steps: Restarts the auxiliary instance and mounts the duplicate control file Creates the duplicate datafiles and recovers them with incremental backups and archived redo logs. Opens the duplicate database with the RESETLOGS option.

How to change the name of a database file in RMAN?

Listed in order of precedence, they are: Use the RMAN command SET NEWNAME FOR DATAFILE within a RUN block that encloses both the SET NEWNAME commands and the DUPLICATE command. Use the RMAN command CONFIGURE AUXNAME to specify new names for existing datafiles.

Is there a way to create a duplicate database?

You can use the RMAN DUPLICATE command to create a duplicate database from backups of the target database (primary database) while retaining the original target database. The duplicate database can be identical to the target database or contain only a subset of the tablespaces in the target database.