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Data loss is a database administrator (DBA)'s worst nightmare. However, with Oracle RMAN (Recovery Manager) technology and Eka Sunucu's powerful infrastructure solutions, you can recover only deleted or corrupted tables within minutes without returning the entire database.
In modern data management standards of 2026 , RECOVER TABLE We have compiled the details of the command, its performance optimizations and step-by-step application processes for you.
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Prior to Oracle Database 12c, DBAs had a very difficult job when a user accidentally deleted (DROP) a table or corrupted data. Generally, it was necessary to restore the entire database to another server (Point-in-Time Recovery) and then export the table related to Data Pump and import it into the live system (Import). This process could take hours or even days depending on the database size.
However, it came into our lives with Oracle 12c and later versions (19c, 21c, 23c). RECOVER TABLE The command has completely automated this process. RMAN now creates a temporary database (Auxiliary Instance) in the background, uploads the necessary files there, exports the table and imports it into the main database. This entire process is managed with a single command block.
Before you begin table recovery with RMAN, you must ensure that the following requirements are met:
In the following scenario, HR in the diagram EMPLOYEES Let's say the table has been accidentally deleted (DROP) or the data has become corrupted and we want to restore this table to last night's backup or to a specific time (SCN or Time).
First, connect to your server via SSH and start the RMAN tool. For a secure connection and management What is SSH? You can take a look at our article.
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export ORACLE_SID=orcl
rman target /This command is one of the most powerful features of RMAN. The following block restores the table to the specified time. The database does not need to be closed during this process.
RECOVER TABLE HR.EMPLOYEES
UNTIL TIME "to_date('2026-01-10 14:00:00', 'yyyy-mm-dd hh24:mi:ss')"
AUXILIARY DESTINATION '/u01/app/oracle/oradata/aux'
REMAP TABLE HR.EMPLOYEES:HR.EMPLOYEES_RECOVERED;UNTIL TIME: Specifies the time at which you want to return to the table. SCN (System Change Number) can also be used.
AUXILIARY DESTINATION: This is the disk space where RMAN will create the temporary database (instance). This area must be writable and have sufficient space. Insufficient disk space will cause the operation to fail. Therefore Backup ServicesYou can choose our large storage areas.
REMAP TABLE: This is an optional but recommended parameter. Instead of crushing the existing table, it creates the recovered data with a new name (EMPLOYEES_RECOVERED). This way, you can make comparisons without losing existing data.
When you run the command, RMAN does the following in the background:
AUXILIARY DESTINATION Creates a temporary Oracle Instance on it.RMAN operations, especially RECOVER TABLE Processes that create auxiliary instances, such as, require intensive disk I/O and CPU power. A slow disk infrastructure can stretch a 10 minute recovery process into hours.
As Eka Sunucu, we offer optimized hardware for your Oracle databases:
Minimize auxiliary instance creation times with Intel Xeon and AMD EPYC processors.
Avoid bottlenecks in backup and restoration processes with read/write speeds up to 6 times faster than ordinary SSDs.
Your data is always safe with our automatic backup solutions. Our backup packages Check it out.
The most frequently asked questions about Oracle RMAN table recovery operations.
Yes, in Oracle 12c and above, you can return only a specific table or tables to a past time without affecting the entire database with the RMAN 'RECOVER TABLE' command.
The process stops with an error. When creating an auxiliary instance, RMAN opens SYSTEM, SYSAUX, UNDO and related data tablespaces here. Therefore, it is very important to analyze disk space before the process. On our VDS servers You can expand disk space flexibly.
Yes, this process creates CPU and I/O load because it will run an additional database (instance) on the server. For this reason, the operation should be done during the hours when the system is least busy or if there is a strong physical server It is recommended to use.
Reduce the risk of data loss to zero with Eka Sunucu's managed server services and professional backup solutions. Discover the most suitable infrastructure for your Oracle databases today.