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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsIn Oracle Database 19c, the Fast Recovery Area (FRA) is a managed, size-limited storage area for recovery files; an archive log destination is a target where the database writes archived redo. They are related but not interchangeable: the FRA can be selected as an archive destination, alongside filesystem, ASM, or remote standby targets.
What each term means
Fast Recovery Area (FRA)
The FRA is recovery storage configured with DB_RECOVERY_FILE_DEST for its location and DB_RECOVERY_FILE_DEST_SIZE for its configured size limit. Oracle can use it for recovery-related files including archived redo logs, backups, flashback logs, and control-file copies. Oracle Database 19c reference: DB_RECOVERY_FILE_DEST
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Archive log destination
An archive log destination is a target for archived redo. In Oracle 19c, the LOG_ARCHIVE_DEST_n parameters identify individual targets. Depending on the destination, archived redo can be written to a local filesystem, an Oracle ASM disk group, the FRA, or a remote database service. Oracle Database 19c: Managing Archived Redo Log Files
How the FRA and archive destinations relate
The difference is one of role: the FRA describes a recovery-storage area, while an archive destination parameter specifies where archived redo is sent. The FRA becomes an archive destination when Oracle is configured to use it for that purpose; it is not itself the LOG_ARCHIVE_DEST_n parameter.
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To explicitly select the FRA as a local archive target, use LOCATION=USE_DB_RECOVERY_FILE_DEST in a LOG_ARCHIVE_DEST_n setting. Other destinations can instead specify a local path or ASM disk group, or use SERVICE=net_service_name for a remote database. Oracle Database 19c: Managing Archived Redo Log Files
What happens if you configure the FRA but not LOG_ARCHIVE_DEST_1?
In Oracle Database 19c, if an FRA is configured and no local archive destination is specified, Oracle automatically selects the FRA as a local archive destination and sets LOG_ARCHIVE_DEST_1 to USE_DB_RECOVERY_FILE_DEST. This documented default explains why an FRA can receive archived redo even when you have not explicitly configured a local destination. Oracle Database 19c: Managing Archived Redo Log Files
How many destinations can be configured?
Oracle Database 19c documents LOG_ARCHIVE_DEST_n destination numbers from 1 through 31. Destinations 1–10 can be local or remote; destinations 11–31 are remote-only. A configuration can therefore target more than one destination, rather than treating the FRA as the only possible location for archived redo. Oracle Database 19c: Managing Archived Redo Log Files
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- Use the FRA when: you want Oracle to manage a bounded recovery area for files such as backups, archived redo, and flashback logs.
- Use a local archive destination when: archived redo should be written to a selected filesystem path or ASM disk group.
- Use a remote service destination when: archived redo should be sent to a remote database, such as a standby.
- Use multiple destinations when: your recovery or availability design calls for more than one target; distinguish local and remote targets in the configuration.
These are not mutually exclusive choices: a database may use the FRA for recovery files and also configure other archive destinations. The right arrangement depends on the intended recovery and availability policy.
How to plan FRA capacity and placement
DB_RECOVERY_FILE_DEST_SIZE defines the configured FRA bound. Size it against the recovery files your strategy needs to retain, including backups and archived logs, and the archived-log volume your database generates. There is no universal fixed multiplier established for all databases: retention goals and workload determine the space requirement.
Oracle recommends keeping the FRA separate from the active database area where practical. If live database files and recovery copies share storage, a media failure affecting that storage could affect both. Oracle Database 19c: Configuring the RMAN Environment
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Quick comparison
| Question | FRA | Archive log destination |
|---|---|---|
| What does it describe? | A recovery-storage area. | A target for archived redo. |
| How is it configured? | DB_RECOVERY_FILE_DEST sets location; DB_RECOVERY_FILE_DEST_SIZE sets the configured size limit. |
LOG_ARCHIVE_DEST_n identifies destination targets. |
| Can it hold archived redo? | Yes. The FRA can be selected as a local archive target. | Yes; that is the destination’s purpose. |
| Possible locations or target types | Recovery area location, including filesystem or ASM-backed storage as configured. | Local filesystem, ASM, FRA, or remote database service. |
| Can it contain other recovery files? | Yes, including backups, flashback logs, and control-file copies. | The parameter specifies an archived-redo target, not a general recovery area. |
Further Oracle documentation
For the broader recovery context, see Oracle’s Backup and Recovery User’s Guide, 19c.
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