How to recover a Database in suspect mode

Step 1:
Clear the suspect mode of the database using sp_resetstatus DatabaseName. This will clear the suspect flag and make the database available online

Step 2:
Change the database status to Emergency using the following command. Emergency mode allows you to access the databases as normal but with no consistency guarantee. This option also allows us to export the table data so that we can minimize the damage.
ALTER DATABASE DatabaseName SET EMERGENCY;

Step 3:
Restrict database to single user by changing the access mode as mentioned below
ALTER DATABASE DatabaseName SET SINGLE_USER;

Step 4:
Run the CHECKDB command with “REPAIR_ALLOW_DATA_LOSS” option. This option should be tried as last option as it always behaves the way it is named. We are not sure of what data it removes.
DBCC CHECKDB (DatabaseName, REPAIR_ALLOW_DATA_LOSS) WITH NO_INFOMSGS, ALL_ERRORMSGS;

There are some best (simple) practices which prevents us from such failures. Below are some of them

* Backup your data frequently ( daily or once in two days)
* Have multiple backups. Move the backups to external drives or tapes frequently
* Validate that your backups are good by doing trial restores to alternate server
* Run CHECKDB regularly