If you created a full database backup Snapshot copy without automatically verifying the databases at the time the backup was created, you can verify the databases in that backup as a separate operation. See the following topics for more information:
Attention
If you attempt to perform a database verification (or a backup with database verification) when SnapManager is running from a Terminal Services client instead of from a system console, the operation will fail.
A database integrity verification job is specified using a combination of parameters.
Each time you start or schedule a database verification, you must specify the following information in either the Backup Wizard or in the Backup and Verification tab:
You can deselect databases that reside on a different LUN from the database(s) you selected, even if the LUN is on the same storage volume, as follows:
For more information, see Using backup management groups in backup and verification.
Note
If you request verification of a greater number of unverified Snapshot copies than specified by your database and backup management group selections, the verification will proceed, and therefore all backups will be verified.
This feature is typically used to automatically archive a backup, as described in Automatically archiving SnapManager backups using SnapVault.
Note
The result of the database verification operation (the database integrity status) is written to the backup set, in the SnapInfo directory. By replicating the backup set to the mirrored volume, this status information is kept current on the mirrored volume.
For more information, see Replicating Backups to Mirrored Volumes.
Note
If you want to schedule the verification to run later, you also need to know the job scheduling information.
The following list summarizes the settings that pertain to database verification:
This is configured using the SQL Server tab of the Verification Settings dialog box, described in Selecting the database verification server. If you will be specifying a remote verification server, be sure it is set up properly, as described in Requirements for a remote verification server.
Note
Whether you run database verification either remotely or locally, the verification is performed on a LUN backed by Snapshot copy. If you make a Snapshot copy of the same volume while a LUN backed by Snapshot copy exists, you create a "busy Snapshot," which might cause problems when you attempt to delete some Snapshot copies. For this reason, you must be careful not to schedule backups while a verification is in progress. For information about busy Snapshot copies, see Busy Snapshot error prevents deletion of backup set.
This is configured using the DBCC Options tab of the Verification Settings dialog box, described in Selecting DBCC options.
The Verification Settings dialog box can be accessed from the Backup and Verification tab, as well as from the Backup Wizard.
Note
The View or Change Database Verification Options screen appears only if you are specifying a "Full database backup" operation or a "Verify most recent Snapshot backups" operation; the SnapManager Backup Wizard does not present this screen if you are specifying a "Transaction log backup only" operation.
To start or schedule database verification, complete the following steps from the production SQL Server host system (not from the remote verification server).
Note
Whether you run verification remotely or locally, the verification is performed on a LUN backed by Snapshot copy. If you make a Snapshot copy of the same volume while a LUN backed by Snapshot copy exists, you create a "busy Snapshot," which might cause problems when you attempt to delete some Snapshot copies. For this reason, you must be careful not to schedule backups while a verification is in progress. For information about busy Snapshots, see Busy Snapshot error prevents deletion of backup set.
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On the production SQL server, click the Backup and Verification tab. |
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In the left panel, select the databases you want to verify. When you select a database, SnapManager automatically selects all other databases that reside on the same storage system volume. For information about deselecting any automatically selected databases, see the bullet "Which databases you want to back up" under Job-specific parameters. |
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| 3 |
In the Types panel, select the Verify Databases and Transaction Logs in the Most Recent Unverified Backups (Run DBCC CHECKDB) option. ResultThe Options subpanel provides a choice of backup options that pertain verifying the unverified backup Snapshot copies.
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| 4 |
Select the number of the most recent unverified backups you want to verify. Note |
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In the Backup Management Group option, select the backup management group of the backups you want to verify. If you want to verify the most recent backups regardless of their backup management group, select All. |
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If you want to run a command after the database verification finishes, select the Run Command After Operation option. This is usually done to archive backups. Note |
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If your volume is a SnapMirror source volume and you do not want the destination volume to be updated after this verification is complete, clear the Update SnapMirror After Operation option. Note |
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| 8 |
You can either run the verification now or schedule it for later. Click one of the following buttons: |
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| 9 |
If the Run Command After Operation dialog box appears, specify the command and then Click OK to close the dialog box. For details, see Using the Run Command After Operation dialog box. |
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If the Schedule Job dialog box appears, complete this procedure by scheduling the backup. For details, see Scheduling a backup job or a database verification job. |
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If the Backup Status dialog box appears, do the following: ResultThe verification operation is performed, and each item in the Backup Task List is checked off as the task is finished.
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To start or schedule a database verification using the Backup Wizard, complete the following steps.
Note
For a list of information you need to provide as you complete these steps, see Information you need to specify for a database verification.
| 1 |
In the SnapManager for SQL Server main window, click the SnapManager Backup Wizard icon. ResultThe SnapManager Backup Wizard starts and displays the Welcome screen. |
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| 2 |
Result |
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| 3 |
In the left panel, click to select the databases you want to verify, When you select a database, SnapManager automatically selects all other databases that reside on the same storage system volume. For information about deselecting any automatically selected databases, see the bullet "Which databases you want to back up" under Job-specific parameters. |
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| 4 |
ResultThe Back Up or Verify Databases and Transaction Logs screen appears. |
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| 5 |
Specify the number of database backup Snapshot copies you want to verify: Result |
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| 6 |
Follow the instructions in the remainder of the Backup Wizard screens. The following screens enable you to specify the details of a database verification:
For a list of information you need to provide, see Information you need to specify for a database verification. |
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The When to Run this Operation screen prompts you to choose whether you want the operation to be performed now or scheduled for a later time. |
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Go to Step 8. | ||
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Go to Step 11. | ||
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If you want to run the database verification now, do the following: ResultThe Completing the Backup Wizard screen appears and displays the database verification settings you have selected. |
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| 9 |
After you verify that all the settings in the window are correct, go to the Completing the Backup Wizard dialog box and click Finish. ResultThe Backup Wizard closes and the Backup Status window appears and displays a Backup Task List that will be used to show the progress of the database verification operation after you start it. |
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| 10 |
In the Backup Status window, click Start Now. ResultThe database verification is performed.
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| 11 |
If you want to schedule the database verification for later, do the following: For more information, see Scheduling a backup job or a database verification job. Result |
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| 12 |
In the Select the Scheduling Service screen, do the following:
ResultThe Completing the Backup Wizard screen appears and displays the backup settings you have selected. |
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After you verify that all the settings in the window are correct, go to the Completing the Backup Wizard dialog box and click Finish. ResultThe selected scheduler displays one of two dialog boxes, as follows: |
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To schedule the job and close the Backup Wizard, do the following: |
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File: bkptask6.htm
Last updated: 01-Sep-2006 07:41:15