Tag Archives: Sync

Cleaning up CRM Sync Entry tables

If you’re CRM system has been up and running for a long period of time and your users have the CRM Outlook client installed (or have had it installed in the past) you’ll find many tables starting in SyncEntry_ as well as SubscriptionStatistics_ in your database. These tables are used to track items that are synchronized down to users client machines, however, when users get new client machines or leave the company the tables are left behind indefinitely.  This script has become a cleanup step we run with our customers prior to upgrading or periodically to prune out old sync data.

Important NOTES about this script:

  • Always make a backup before running this script against your DB.
  • Running scripts that modify your database are not supported, thus we’ve gone to great lengths to test this and make sure that all entries are cleaned out.  As of today this script can successfully run on:
    • CRM 4.0 UR7 and greater
    • CRM 2011 RTM through CRM 2011 Update Rollup 8
  • Do not modify any parameters or joins in this script or you could risk data damage
  • The script currently deletes all sync data older than 90 days
  • If a users sync entry data were to be deleted, the next time the user attempts to sync their client, the data would be rebuilt automatically
  • To test the script you can edit the “SET @execute = 1” and set it to a “0”, this will allow the script to run in a read-only mode and print out the SQL statements it would run to delete the tables.

 

Declare 
      @SyncEnt    varchar(60),
      @syncId     uniqueidentifier,
      @SQL        nvarchar(MAX), 
      @execute bit

--To run the deletions set this to 1, if it is 0 it will only print the statements
SET @execute = 1 

DECLARE CRMSync_cursor CURSOR FOR

SELECT Replace(SyncEntryTableName,'SyncEntry_','') as SyncEntryGUID, SubscriptionId from subscription 
where LastSyncStartedOn < GetDate()-90 or LastSyncStartedOn is NULL

OPEN CRMSync_cursor
FETCH NEXT FROM CRMSync_cursor INTO @SyncEnt, @syncId
WHILE @@Fetch_Status = 0
BEGIN
      IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID('subscriptionStatistics_'+@SyncEnt) AND type in (N'U'))
      BEGIN
            SET @SQL = 'DROP TABLE SubscriptionStatistics_' +(@SyncEnt)
            IF @execute=1 EXEC sp_executesql @SQL
            IF @execute=0 PRINT @SQL
            IF @execute=1 PRINT 'Dropped table: SubscriptionStatistics_'+(@SyncEnt)+ ' with error: ' + CAST(@@ERROR as varchar(255))
      END
      ELSE
            IF @execute=1 PRINT 'SubscriptionStatistics table does not exist for subscriptionID: ' + CAST(@syncId as varchar(50))

      IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID('SyncEntry_'+@SyncEnt) AND type in (N'U'))
      BEGIN
            SET @SQL = 'DROP TABLE SyncEntry_' +(@SyncEnt)
            IF @execute=1 EXEC sp_executesql @SQL
            IF @execute=0 PRINT @SQL
            IF @execute=1 PRINT 'Dropped table: SyncEntry_'+(@SyncEnt) + ' with error: ' + CAST(@@ERROR as varchar(255))
      END
      ELSE
            IF @execute=1 PRINT 'SyncEntry table does not exist for subscriptionID: ' + CAST(@syncId as varchar(50))

      SET @SQL = 
            'delete from SubscriptionManuallyTrackedObject where subscriptionId = ''' + CAST(@syncId as varchar(50)) + ''';' +
            'delete from subscriptionclients where subscriptionId = ''' + CAST(@syncId as varchar(50)) + ''';' +
            'delete from Subscriptionsyncinfo where subscriptionId = ''' + CAST(@syncId as varchar(50)) + ''';' +
            'delete from subscription where subscriptionId = ''' + CAST(@syncId as varchar(50)) + ''''
      IF @execute=1 EXEC sp_executesql @SQL
      IF @execute=0 PRINT @SQL
      IF @execute=1 PRINT 'Dropped subscription table data for subscriptionId: ' + CAST(@syncId as varchar(50)) + ' with error data: ' + CAST(@@ERROR as varchar(255))
      FETCH NEXT FROM CRMSync_cursor INTO @SyncEnt, @syncId
END
CLOSE CRMSync_cursor
DEALLOCATE CRMSync_cursor
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