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- Light converse duplicate database folder update#
- Light converse duplicate database folder upgrade#
- Light converse duplicate database folder full#
RMAN determines which backups and archived redo log files must be used based on the UNTIL condition.
Light converse duplicate database folder full#
A combination of full and incremental backups can be used. In backup-based duplication, preexisting RMAN backups of the source database are used to create the duplicate database. Location for Oracle managed online redo log files. See " Using the LOG_FILE_NAME_CONVERT Parameter to Generate Names for Non-OMF or ASM Log Files". Pairs of strings for naming online redo log files. See " Using the DB_FILE_NAME_CONVERT Parameter to Generate Names for Non-OMF or ASM Data Files". You can also specify DB_FILE_NAME_CONVERT parameter on the DUPLICATE command itself. Pairs of strings for converting the names of data files and temp files.
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Required, if this initialization parameter is set in the source database However, if no DB_BLOCK_SIZE parameter is specified in the source database initialization parameter file, then do not specify DB_BLOCK_SIZE parameter in the auxiliary instance. If the source database parameter file contains a value for the DB_BLOCK_SIZE initialization parameter, then you must specify the same value for the auxiliary instance.
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This block size must match the block size of the source database. The block size for the duplicate database. The DB_NAME initialization parameter for the duplicate database must be unique among databases in its Oracle home. If you use the DUPLICATE command to create a standby database, then the name must be the same as the primary database. The same name used in the DUPLICATE command. Table 25-1 Auxiliary Instance Initialization Parameters Initialization Parameter To register the copied database in the same recovery catalog with the original, you must change the DBID with the DBNEWID utility. If you copy a database with operating system utilities rather than the DUPLICATE command, then the DBID of the copied database remains the same as the original database. You can then register the duplicate database in the same recovery catalog as the source database. RMAN assigns a new DBID to the duplicate database (except when a standby database is created, in which case the source DBID is retained). The farthest point of recovery of the duplicate database is the most recent redo log file archived by the source database. Point-in-time recovery is required because the online redo log files in the source database are not backed up and cannot be applied to the duplicate database. RMAN must perform database point-in-time recovery, even when no explicit point in time is provided for duplication. The source host and destination host can be the same or different computers.įor the duplication process, the database instance that is associated with the duplicate database is called the auxiliary instance. The destination host is the computer that hosts the duplicate database. The source database instance is the instance that is associated with the source database. The source host is the computer that hosts the source database. You must understand some basic concepts before duplicating a database. A database copy, however, cannot be used in this way: it is not intended for failover scenarios and does not support the various standby recovery and failover options. If the primary database is inaccessible, then you can fail over to the standby database, which becomes the new primary database.
Light converse duplicate database folder update#
A standby database is a copy of the primary database that you update continually with archived redo log files from the primary database. You can create a physical standby database or an Oracle Data Guard far sync instance. Test the effect of applications on database performance
Light converse duplicate database folder upgrade#
Test an upgrade to a new release of Oracle Database You can perform the following tasks in a duplicate database:įor example, you can duplicate the production database on host1 to host2, and then use the duplicate database on host2 to practice restoring and recovering this database while the production database on host1 operates as usual. A duplicate database is useful for a variety of purposes, most of which involve testing.