Wednesday, February 13, 2013

Schedule to Rebuild Index for your user database

Here is the script you can use to Rebuild Index job to be scheduled to run specific time.


USE [msdb]
GO

BEGIN TRANSACTION
DECLARE @ReturnCode INT
SELECT @ReturnCode = 0
IF NOT EXISTS (SELECT name FROM msdb.dbo.syscategories WHERE name=N'Database Maintenance' AND category_class=1)
BEGIN
EXEC @ReturnCode = msdb.dbo.sp_add_category @class=N'JOB', @type=N'LOCAL', @name=N'Database Maintenance'
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback

END
DECLARE @jobId BINARY(16)
EXEC @ReturnCode =  msdb.dbo.sp_add_job @job_name=N'DBA Index Maintenance_MyDBTest',
  @enabled=1,
  @notify_level_eventlog=0,
  @notify_level_email=2,
  @notify_level_netsend=0,
  @notify_level_page=0,
  @delete_level=0,
  @description=N'MyDBTest',
  @category_name=N'Database Maintenance',
  @owner_login_name=N'sa',
  @notify_email_operator_name=N'DBA_Mail', @job_id = @jobId OUTPUT
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
EXEC @ReturnCode = msdb.dbo.sp_add_jobstep @job_id=@jobId, @step_name=N'ReIndex Maintenance_MyDBTest',
  @step_id=1,
  @cmdexec_success_code=0,
  @on_success_action=1,
  @on_success_step_id=0,
  @on_fail_action=2,
  @on_fail_step_id=0,
  @retry_attempts=0,
  @retry_interval=0,
  @os_run_priority=0, @subsystem=N'TSQL',
  @command=N'USE MyDBTest
GO
-- Ensure a USE statement has been executed first.
SET NOCOUNT ON;
DECLARE @objectid int;
DECLARE @indexid int;
DECLARE @partitioncount bigint;
DECLARE @schemaname nvarchar(130);
DECLARE @objectname nvarchar(130);
DECLARE @indexname nvarchar(130);
DECLARE @partitionnum bigint;
DECLARE @partitions bigint;
DECLARE @frag float;
DECLARE @command nvarchar(4000);
-- Conditionally select tables and indexes from the sys.dm_db_index_physical_stats function
-- and convert object and index IDs to names.
SELECT
    object_id AS objectid,
    index_id AS indexid,
    partition_number AS partitionnum,
    avg_fragmentation_in_percent AS frag INTO #work_to_do FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL , NULL, ''LIMITED'') WHERE avg_fragmentation_in_percent > 10.0 AND index_id > 0;

-- Declare the cursor for the list of partitions to be processed.
DECLARE partitions CURSOR FOR SELECT * FROM #work_to_do;

-- Open the cursor.
OPEN partitions;

-- Loop through the partitions.
WHILE (1=1)
    BEGIN;
        FETCH NEXT
           FROM partitions
           INTO @objectid, @indexid, @partitionnum, @frag;
        IF @@FETCH_STATUS < 0 BREAK;
        SELECT @objectname = QUOTENAME(o.name), @schemaname = QUOTENAME(s.name)
        FROM sys.objects AS o
        JOIN sys.schemas as s ON s.schema_id = o.schema_id
        WHERE o.object_id = @objectid;
        SELECT @indexname = QUOTENAME(name)
        FROM sys.indexes
        WHERE  object_id = @objectid AND index_id = @indexid;
        SELECT @partitioncount = count (*)
        FROM sys.partitions
        WHERE object_id = @objectid AND index_id = @indexid;

-- 40 is an arbitrary decision point at which to switch between reorganizing and rebuilding.
        IF @frag < 40.0
            SET @command = N''ALTER INDEX '' + @indexname + N'' ON '' + @schemaname + N''.'' + @objectname + N'' REORGANIZE'';
        IF @frag >= 40.0
            SET @command = N''ALTER INDEX '' + @indexname + N'' ON '' + @schemaname + N''.'' + @objectname + N'' REBUILD WITH ( ONLINE = ON )'';
        IF @partitioncount > 1
            SET @command = @command + N'' PARTITION='' + CAST(@partitionnum AS nvarchar(10));
        EXEC (@command);
        PRINT N''Executed: '' + @command;
    END;

-- Close and deallocate the cursor.
CLOSE partitions;
DEALLOCATE partitions;

-- Drop the temporary table.
DROP TABLE #work_to_do;
GO
exec sp_updatestats
go',
  @database_name=N'master',
  @flags=0
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
EXEC @ReturnCode = msdb.dbo.sp_update_job @job_id = @jobId, @start_step_id = 1
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
EXEC @ReturnCode = msdb.dbo.sp_add_jobschedule @job_id=@jobId, @name=N'ReIndex Maintenance_MyDBTest',
  @enabled=1,
  @freq_type=8,
  @freq_interval=64,
  @freq_subday_type=1,
  @freq_subday_interval=0,
  @freq_relative_interval=0,
  @freq_recurrence_factor=1,
  @active_start_date=20120116,
  @active_end_date=99991231,
  @active_start_time=201000,
  @active_end_time=235959
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
EXEC @ReturnCode = msdb.dbo.sp_add_jobserver @job_id = @jobId, @server_name = N'(local)'
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
COMMIT TRANSACTION
GOTO EndSave
QuitWithRollback:
    IF (@@TRANCOUNT > 0) ROLLBACK TRANSACTION
EndSave:

GO

 

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