In SQL Server, resource dependencies refer need of other resource to operate. Cluster resource dependencies points to a limited relationship. The relationship criterion is ‘and’ relationship and so each of the resource providers must be online to serve dependent resource. If either of the providers fails, dependent has to be discarded so as to prevent problems.
At the time of installation of SQL Server, some default dependencies are created, which should not be altered. Also, don’t make other resources to be dependent upon SQL Server.
However, default dependencies have some limitations which shouldn’t be violated in any case to be free from SQL database
issues:
• SQL Server Agent and SQL VServer resources have to be dependent upon SQL Server and SQL network name resources correspondingly.
• SQL IP address resource is the provider to SQL network name.
• SQL IP address resource and physical disk resources are free from these dependencies.
• The data concerning dependencies is among SQL Server, physical disk resources and SQL network name esource. Data is held on the physical disk resources. Where SQL Server resource is dependent upon other two. Now, the restriction is on the mount points which should appear as the cluster resource when they are being used mutually with the physical disks and each of them should be added as a SQL Server dependency. On the other hand, if this has not been done, SQL database may face corruption on failover or after restarting. So don’t play with these limitations and try to maintain them. However, you have the power to add physical disks to the SQL Server resource.
The database corrupted in this way has the only solution via SQL repair, for which scanning algorithms should be applied in order to obtain MDF recovery. SQL recovery software perform this job well and are the suitable applications with the read-only conduct and great MDF repair abilities.
For perfect and worth SQL recovery, use Stellar Phoenix SQL Database Recovery. This is the advanced MDF repair application, using indigenously developed procedures to scan and extract out the data.
This MDF recovery software is compatible with SQL Server 2000 and 2005. Moreover, this read-only and interactive SQL repair tool separates out corruption from all the objects of the database.
