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Friday, February 1, 2008

SQL 2005 Database State

The following table defines the database states.




























State

Definition

ONLINE



Database is available for access. The primary filegroup is online, although the undo phase of recovery may not have been completed.



OFFLINE



Database is unavailable. A database becomes offline by explicit user action and remains offline until additional user action is taken. For example, the database may be taken offline in order to move a file to a new disk. The database is then brought back online after the move has been completed.



RESTORING



One or more files of the primary filegroup are being restored, or one or more secondary files are being restored offline. The database is unavailable.



RECOVERING



Database is being recovered. The recovering process is a transient state; the database will automatically become online if the recovery succeeds. If the recovery fails, the database will become suspect. The database is unavailable.



RECOVERY PENDING



SQL Server has encountered a resource-related error during recovery. The database is not damaged, but files may be missing or system resource limitations may be preventing it from starting. The database is unavailable. Additional action by the user is required to resolve the error and let the recovery process be completed.



SUSPECT



At least the primary filegroup is suspect and may be damaged. The database cannot be recovered during startup of SQL Server. The database is unavailable. Additional action by the user is required to resolve the problem.



EMERGENCY



User has changed the database and set the status to EMERGENCY. The database is in single-user mode and may be repaired or restored. The database is marked READ_ONLY, logging is disabled, and access is limited to members of the sysadmin fixed server role. EMERGENCY is primarily used for troubleshooting purposes. For example, a database marked as suspect can be set to the EMERGENCY state. This could permit the system administrator read-only access to the database. Only members of the sysadmin fixed server role can set a database to the EMERGENCY state.


3 comments:

Alexis said...

There are a lot of good tool for work with MS SQL Server.But I know one not bad tool-repair mdf.It helped me many times as far as I remember.Tool has free status and moreover it can can save recovered data as SQL scripts and supports data extraction via the local area network.

Alex said...

Yesterday a friend told me about his problem with MS SQL Server.And I advised for him-sql mdf recovery tool.And today he came to me and told me thanks for this tool.As he said application decided his problems in seconds and without payment.Besides tool showed how it supports data extraction via the local area network.

Adam Gorge said...

when we can not recover our database by restoration or some recovery process than we can use any good sql recovery software.