What does it mean to take a database offline?
I’ve had to do this before. Sometimes a nasty bug is found in your app that, even though not malicious, will still corrupt data in your database. Taking the database offline is a quick way to stop the bleeding until you get the bug identified. You can then bring it back online to assess the damage within the database.
How do you cold backup a database?
How to create cold backup using RMAN?
- Step 1) Shutdown database. SQL> shutdown immediate;
- Step 2) Start database in mount stage. SQL> startup mount;
- Step 3) Run rman and connect to target database and run rman to backup database and connection to catalog if you are using one. $ $ORACLE_HOME/bin/rman target /
What happens when I drop a database offline?
Because sometimes it turns out that a database is in use when we thought it wasn’t. If you do choose to take databases offline before dropping them: When it comes time drop the database, remember that you’ll need to clean up the files manually if you drop it while it’s offline
Is there a way to fix SQL Server in emergency mode?
In these situations, prior to SQL Server 2005, there was no documented or supported way to fix a database while in EMERGENCY mode – the only guidance could be found on the Internet or from calling Product Support and paying for help. The sequence of events was: Hack the system tables to get the database into EMERGENCY mode.
What happens when you drop a database in SQL Server?
When you drop a database in SQL Server, the files are normally removed from the file system right away. POOF! Hope you had a backup if you ran DROP DATABASE against the wrong instance. However, things are a little different if you take the database offline before you drop it.
How long does it take to take a SQL server offline?
In my case, the database was related to an old Sharepoint install. Stopping and disabling related services in the server manager “unhung” the take offline action, which had been running for 40 minutes, and it completed immediately. You may wish to check if any services are currently utilizing the database.