recover standby database from service
时间: 2023-11-27 19:50:30 浏览: 36
To recover a standby database from a service, you can follow the below steps:
1. Connect to the primary database using SQL*Plus or any other database client tool.
2. Check the status of the standby database using the following command:
```
SELECT NAME, DB_UNIQUE_NAME, DATABASE_ROLE, OPEN_MODE FROM V$DATABASE;
```
This command will display the name, unique name, database role, and open mode of the primary and standby databases.
3. If the standby database is not in sync with the primary database, you need to perform a switchover to make it the primary database.
4. Once the standby database is in sync with the primary database, you can start the recovery process by executing the following command:
```
RECOVER DATABASE USING SERVICE '<service_name>';
```
This command will initiate the recovery process on the standby database using the specified service name.
5. Monitor the progress of the recovery process using the following command:
```
SELECT PROCESS, SEQUENCE#, BLOCK#, STATUS FROM V$MANAGED_STANDBY;
```
This command will display the current status of the recovery process.
6. Once the recovery process is complete, you can open the standby database in read-only mode using the following command:
```
ALTER DATABASE OPEN READ ONLY;
```
This command will allow you to access the standby database in read-only mode.
Note: Make sure to maintain proper backups of both the primary and standby databases to avoid any data loss.