Hi, Below is the script to re-build the database indesxes- to imporove performance of the system. hope this helps
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;
-- 30 is an arbitrary decision point at which to switch between reorganizing and rebuilding.
IF @frag < 30.0
SET @command = N'ALTER INDEX ' + @indexname + N' ON '
+ @schemaname + N'.' + @objectname + N' REORGANIZE';
IF @frag >= 30.0
SET @command = N'ALTER INDEX ' + @indexname + N' ON '
+ @schemaname + N'.' + @objectname
+ N' REBUILD WITH(ONLINE = ON, MAXDOP = 8)';
IF @partitioncount > 1
SET @command = @command + N' PARTITION='
+ CAST(@partitionnum AS NVARCHAR(10));
begin try
EXEC (@command);
end try
begin catch
print 'whoops'
end catch
PRINT N'Executed: ' + @command;
END;
-- Close and deallocate the cursor.
CLOSE partitions;
DEALLOCATE partitions;
-- Drop the temporary table.
DROP TABLE #work_to_do;
GO
sp_updatestats
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;
-- 30 is an arbitrary decision point at which to switch between reorganizing and rebuilding.
IF @frag < 30.0
SET @command = N'ALTER INDEX ' + @indexname + N' ON '
+ @schemaname + N'.' + @objectname + N' REORGANIZE';
IF @frag >= 30.0
SET @command = N'ALTER INDEX ' + @indexname + N' ON '
+ @schemaname + N'.' + @objectname
+ N' REBUILD WITH(ONLINE = ON, MAXDOP = 8)';
IF @partitioncount > 1
SET @command = @command + N' PARTITION='
+ CAST(@partitionnum AS NVARCHAR(10));
begin try
EXEC (@command);
end try
begin catch
print 'whoops'
end catch
PRINT N'Executed: ' + @command;
END;
-- Close and deallocate the cursor.
CLOSE partitions;
DEALLOCATE partitions;
-- Drop the temporary table.
DROP TABLE #work_to_do;
GO
sp_updatestats
