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Tuesday, December 26, 2017

Database Re-Index script

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

Wednesday, May 3, 2017

List of table Ids in AX- SQL dictionary

Hi,


If you ever want to know where all table Id of AX tables are stored? here is the answer its SQLDICTIONARY


here is a query to know the table ID for VendTable

select tabId from sql where sql.sqlName=='VendTable'
&& sql.array==0;

Hope this Helps!
Prasan