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Pre-Upgrade Tasks When Upgrading to System Center 2012 SP1 - Operations Manager

Updated: November 1, 2013

Applies To: System Center 2012 SP1 - Operations Manager

Perform the following pre-upgrade tasks in the order presented before you begin the upgrade process.

  1. Review the Operations Manager Event Logs

  2. Cleanup the Database (ETL Table)

  3. Remove Agents from Pending Management

  4. Disable the Notification Subscriptions

  5. Stop the Services or Disable any Connectors

  6. Verify that the Operational Database Has More Than 50 Percent Free Space

  7. Back up the Operations Manager Databases

Review the Operations Manager Event Logs

Review the event logs for Operations Manager on the management servers to look for recurring warning or critical events. Address them and save a copy of the event logs before you perform your upgrade.

Cleanup the Database (ETL Table)

As part of upgrade to System Center 2012 Service Pack 1 (SP1), Operations Manager installation (setup) includes a script to cleanup ETL tables, grooming the database. However, in cases where there are a large number of rows (greater than 100,000) to cleanup, we recommend running the script before starting the upgrade to promote a faster upgrade and prevent possible timeout of setup. Performing this pre-upgrade task in all circumstances ensures a more efficient installation.

Run the following query to determine the number of rows that need to be deleted from ETL and cleanup the database:

To Cleanup ETL

  1. To determine the number of rows that need to be deleted, run the following query:

    DECLARE @SubscriptionWatermark bigint = 0;     
     
        
    SELECT @SubscriptionWatermark = dbo.fn_GetEntityChangeLogGroomingWatermark();
     
    Select COUNT (*)
    FROM EntityTransactionLog ETL with(nolock)
    WHERE NOT EXISTS (SELECT 1 FROM EntityChangeLog ECL with(nolock) WHERE ECL.EntityTransactionLogId = ETL.EntityTransactionLogId)
    AND NOT EXISTS (SELECT 1 FROM RelatedEntityChangeLog RECL with(nolock) WHERE RECL.EntityTransactionLogId = ETL.EntityTransactionLogId)
    AND EntityTransactionLogId < @SubscriptionWatermark;
    
    
  2. To clean up the ETL Table, run the following SQL script:

    DECLARE @RowCount int = 1;
    DECLARE @BatchSize int = 100000;
    DECLARE @SubscriptionWatermark bigint = 0;
    DECLARE @LastErr int;
    
    SELECT @SubscriptionWatermark = dbo.fn_GetEntityChangeLogGroomingWatermark();
    WHILE(@RowCount > 0)
    BEGIN 
    DELETE TOP (@BatchSize) ETL
    FROM EntityTransactionLog ETL
    WHERE NOT EXISTS (SELECT 1 FROM EntityChangeLog ECL WHERE ECL.EntityTransactionLogId = ETL.EntityTransactionLogId)
    AND NOT EXISTS (SELECT 1 FROM RelatedEntityChangeLog RECL WHERE RECL.EntityTransactionLogId = ETL.EntityTransactionLogId)
    AND ETL.EntityTransactionLogId < @SubscriptionWatermark;
    
    SELECT @LastErr = @@ERROR, @RowCount = @@ROWCOUNT;
    
    
    END
    
noteNote
Cleanup of ETL can require several hours to complete.

Remove Agents from Pending Management

Before you upgrade a management server, remove any agents that are in Pending Management.

To remove agents that are in Pending Management

  1. Log on to the Operations console by using an account that is a member of the Operations Manager Administrators role for the Operations Manager management group.

  2. In the Administration pane, expand Device Management, and then click Pending Management.

  3. Right-click each agent, and then click Approve or Reject.

Disable the Notification Subscriptions

You should disable notification subscription before you upgrade the management group to ensure that notifications are not sent during the upgrade process.

To disable subscriptions

  1. Log on to the Operations console account that is a member of the Operations Manager Administrators role for the Operations Manager management group.

  2. In the Operations console, select the Administration view.

  3. In the navigation pane, expand Administration, expand the Notifications container, and then click Subscriptions.

  4. Select each subscription, and then click Disable in the Actions pane.

noteNote
Multiselect does not work when you are disabling subscriptions.

Stop the Services or Disable any Connectors

Refer to the non-Microsoft connector documentation for any installed Connectors to determine the services used for each Connector.

To stop a service for Connectors

  1. On the Start menu, point to Administrative Tools, and then click Services.

  2. In the Name column, right-click the Connector that you want to control, and then click Stop.

Verify that the Operational Database Has More Than 50 Percent Free Space

You must verify that the operational database has more than 50 percent of free space before you upgrade the management group because the upgrade might fail if there is not enough space. You should also ensure that the transactions logs are 50 percent of the total size of the operational database.

To check how much free space the Operational Database has

  1. On the computer that hosts the operational database, open SQL Server Management Studio.

  2. In the Object Explorer, expand Databases.

  3. Right-click the operational database, point to Reports, Standard Reports, and then click Disk Usage.

  4. View the Disk Usage report to determine the percentage of free space.

To increase the free space for the operational database and log files

  1. On the computer that hosts the operational database, open SQL Server Management Studio.

  2. In the Connect to Server dialog box, in the Server Type list, select Database Engine.

  3. In the Server Name list, select the server and instance for your operational database (for example, computer\INSTANCE1).

  4. In the Authentication list, select Windows Authentication, and then click Connect.

  5. In the Object Explorer pane, expand Databases, right-click the operational database, and then click Properties.

  6. In the Database Properties dialog box, under Select a page, click Files.

  7. In the results pane, increase the Initial Size value for the MOM_DATA database by 50 percent.

    noteNote
    This step is not required if free space already exceeds 50 percent.

  8. Set the Initial Size value for the MOM_LOG to be 50 percent of the total size of the database. For example, if the operational database size is 100 GB, the log file size should be 50 GB. Then click OK.

Back up the Operations Manager Databases

Obtain verified recent backups of the operational database and of the data warehouse database before you upgrade the secondary management server. You should also create backups of databases for optional features, such as the Reporting and the Audit Collection Services database before you upgrade them. For more information, see How to: Back up a Database and How to Schedule Backups of System Center 2012 - Operations Manager Databases.

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For additional resources, see Information and Support for System Center 2012.

Tip: Use this query to find online documentation in the TechNet Library for System Center 2012. For instructions and examples, see Search the System Center 2012 Documentation Library.
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