reorganize index sql server. The guidance from Microsoft is that indexes be rebuilt if the fragmentation is over 30% and reorganized if the fragmentation is between 5 and 30%. reorganize index sql server

 
 The guidance from Microsoft is that indexes be rebuilt if the fragmentation is over 30% and reorganized if the fragmentation is between 5 and 30%reorganize index sql server  In my last tip, Index Fragmentation Report in SQL Server 2005 & 2008, I discussed what fragmentation is, its different types, its performance impact and what are different methods available in SQL Server 2005 and 2008 to identify fragmentation levels

This REBUILD option is available in SQL Server 2008 onwards. If you cancel a rebuild operation midway, it. As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. Method 2: Set Change_Tracking to Manual, by using the following command: ALTER FULLTEXT INDEX ON table_name set Change_tracking = Manual Then, create SQL Server jobs to spread. You also can create a linked server to SQLAZURE and create a sql agent job. If the index is disabled, rebuilding brings it back to life. Creating a SQL Server Maintenance Plan. And if the reorganize is a deadlock. If the index’s design doesn’t allow for that, IndexOptimize will try to rebuild the index online. Quick explanation: An online Rebuild, rebuilds the indexes on the tempDB making it available to the queries while it is being rebuilt. In SQL Server, the ALTER INDEX statement is used to modify an existing index. 35. But the index is updating itself properly. Index Reorganize During Database Full Backup. Since we are asking SQL Server to rebuild the clustered index on a quite large table twice, it will take a few. So it can remove some fragmentation - but only on a limited scale. Execute SQL Server Agent Job. If you prefer table lock, REBIULD is. dm_tran_database_transactions DMV:SQL: Procedure for rebuild and reorganize indexes like Microsoft says. SQL Server provides sys. Answers. . The. Larger indexes have more intermediate levels and pages. CREATE PROCEDURE dbo. The execute sql task should contain the index rebuild code along with stats rebuild . Basically, rebuilding is a total rebuild of an index - it will build a new index, then drop the existing one, whereas reorganising it will simply, well. Object: SQLServer:Databases; Counter: Percent Log Used ; Instance: (your big database name) Alert if counter rises above: 80; Response: Execute job ('Reorganize Check') Create a job ('Reorganize Check')In this article. I'm just using the reorg index task that is in the maintenance plan designer GUI. In this case Reorganize option is selected: DBCC DBREINDEX rebuilds an index for a table or all indexes defined for a table. The performance benefit may not be noticeable for indexes that are used primarily for seek operations. I disagree with the 30% rule. If you are reindexing lots of large tables, the changes are still going to be logged and the log. Here are the steps to reorganize indexes using the SSMS: In Object Explorer, expand the database that contains the table on which we want to reorganize an index. I am getting confused with choosing Index Reorganize/Rebuilding of indexes based on avg_fragmentation_in_percent returned by sys. April 1, 2009 at 5:07 am. Use the ReorganizeIndex Task dialog to move index pages into a more efficient search order. It checks the SQL Server licences, if Enterprise it will rebuild the index online else it. It is compatible with all versions of SQL Server 2005 , 2008 , 2012 , 2014 and 2016. The default value for this parameter will be ‘CATALOG’. SQL Server. DBCC DBREINDEX rebuilds an index for a table or all indexes defined for a table. This means every time we need to scan the. The first steps of configuring the Reorganize Index task is quite similar to the Rebuild Index task. This tip will explore two features to speed up SQL Server index and statistics maintenance. This is typically how indexes with page level locking disabled get created. The Reorganize Index task also includes an option to compact large object data. Index rebuilding process uses more CPU and it locks the database resources. This could be done (and is in some databases) when. Table locks alone would not make sense, the point with REORGANIZE is that the table is mainly online while the operation is running. Oct 4, 202335. dm_db_index_physical_stats system dynamic management function which returns a list of indexes created on SQL Server instance with enough information for a database admin to decide if the sql index is fragmented or not. Reorgs require statistics run manually (exec sp_updatestats) From the description it sounds like a less intrusive operation and only less recommended because it's an older, slower process during which the DB will be less responsive. May be index was not there, may be you were just rebuilding the index. The second set of options, in figure 8-5, rebuilds only a single partition of a clustered columnstore index and optionally changes the compression type. This happens approx. He has the best practices coded into his scripts, so it should serve you well. 2) Extra disk space required during SQL Server online index rebuilds. March 2, 2023 at 3:05 pm. This to me would be a sign that constant rebuilds of that index actually aren't a good help. Index fragmentation increased significantly after rebuild. 0 to SQL Server 2016 there is no feature to rebuild index automatically. REORGANIZE, but shrink is going to take an age, and then you’ll generate a ton of log doing the fragmentation removal. I’m talking about the guidance which is: if an index has less than 1000 pages and is in memory, don’t bother removing fragmentation. This index uses column-based data storage and query processing to achieve gains up to 10. [<table_name>] REORGANIZE How to Reorganize and Rebuild Indexes using SSMS. SQL Server also supports nonclustered columnstore indexes. It should be: TRUNCATE; Insert ; ALTER INDEX REBUILD; It might stil be slow, but at least you get sharp indexes. I would like to rebuild and reorganize my indexes, but our system works 24/7. You should intelligently do index reorg and rebuilds. Rebuilds automatically run statistics on your indexes. The following index operations require no additional disk space: ALTER INDEX REORGANIZE; however, log space is required. The first steps of configuring the Reorganize Index task is quite similar to the Rebuild Index task. This makes it more likely that some other session is blocked by your session, and that you may, in turn, become blocked by a lock held by that session. Mohamad Mahmoud Darwish. Pay attention to execution time though. In Object Explorer, Expand the database that contains the table on which you want to reorganize an index. By using the Rebuild Index task, a package can rebuild indexes in a single. This makes it more likely that some other session is blocked by your session, and that you may, in turn, become blocked by a lock held by that session. Unless you are adding data exactly in the order of the index the index will fragment. Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. Hi, in a prod environment, for insufficient available storage, the rebuild index task against some tables is stopped. The problem is that the size is getting out of control, I can see up to 99% fragmentation in the Primary Key clustered indexes. This method can help when Change_tracking is Auto. We will use 3 statements in order to show the blocking: ALTER INDEX. First, we will start the index reorganization in a session using the following T-SQL code. Otherwise you're holding an exclusive lock on the table/partition before you start the reorganize. Therefore you do not need to update statistics OR reorganize an index if it gets rebuilt. Index in SQL Server . )You need to assemble the SQL prior to calling SP_ExecuteSQL, i. If an index contains less than 100 pages, I will perform no maintenance. Its wide range of features allows users to create and manage custom policies, monitor index fragmentation on multiple servers as well as to create index fragmentation reports. Also, in earlier versions the granularity of control was less refined. You can still run the index reorg/rebuild as part of your maintenance scripts. This tool provides index analysis to manage index defragmentation, including rebuild and reorganize fragmented indexes . Online & Offline Index Rebuild. The documentation is also indicating that: Online index operations are not available in every SQL Server edition. The possibility to. Do not use REORGANIZE. SIMPLE mode only means the log space is made available for reuse after a transaction is committed. ALTER FULLTEXT CATALOG [CatalogName] REBUILD. REORGANIZE, or to rebuild the index using ALTER INDEX. There’s not a lot of guidance in the maintenance plan designer, so it’s not uncommon for people to rebuild every index, and. indexstats. To rebuild use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__ REBUILD. This has a benefit. Untuk informasi selengkapnya, lihat panduan arsitektur dan desain indeks SQL Server. Sorry No idea why this happened. For more information about managing indexes, see Reorganize and Rebuild Indexes. configurations setting for fill factor. Creating or dropping the table’s clustered index causes all its nonclustered indexes to be rebuilt. The scripts has some cool features like. This schema modification lock blocks all other concurrent access to the table, but it is only held for a very short period of time while the old index is dropped and the statistics updated. Therefore, you do not need to update statistics after performing ALTER INDEX REBUILD, DBCC DBREINDEX, DBCC INDEXDEFRAG, or ALTER INDEX REORGANIZE operations. Basically every hour I query the dm_db_index_physical_stats dynamic management view and if an index is between 5% and 30% fragmented I. SQL Server 2016 (13. When to rebuild and when to reorganize indexes. You can also slow down fragmentation by inserting data in the order of the index. Index Rebuild operation first drops and then recreates the index. The first and most popular method is to rebuild indexes. the year and month columns. My problem is that the reorg is running for a very long time. the reorganize index also facing some problem like it is successfull once in three runs and twice it is failing. Find and remove unused indexes – everything that is unused doesn’t do anything good. When I run a maintenance plan to reorganize and rebuild tables indexes, it fails. I used the sp_who2 procedure to see which queries were waiting, and which other query they were blocked by. USE AdventureWorks; GO ALTER INDEX ALL ON Production. Partitions can be rebuilt individually. Statistics on indexes automatically get updated. Particularly if you are in full recovery. less than 10% logical fragmentation, don’t. Ideally , microsoft suggests that reorganize should be used for index fragmentation between 5 and 30 % and rebuild for > 30%May 5, 2010 at 8:00 am. Suggest you investigate alternatives, such as [Ola Hallengren's SQL Server maintenance tools][1] - free to use. You can apply a new fillfactor when you rebuild an index. UPDATEIn this article. Rebuild/Reorganize working fine. If you want to know how far along it is, open up another instance of SSMS and connect to the server, then run a query against the sys. DROP INDEX when. Please refer to SQL Server Maintenance Plan Reorganize Index and Update Statistics Tasks to get more information about how to design the maintenance plan. Expand the Indexes. Right-click on Maintenance Plans and select New Maintenance Plan…. The Query Optimizer. A SQL Server DBA myth a day: (29/30) fixing heap fragmentation. Bug in Rebuild on SQL Server 2016 and above? 6. ALTER INDEX ALL ON [dbo]. For more information, see sys. REORGANIZE [ WITH ( LOB_COMPACTION = { ON | OFF } ) ] Applies to: SQL Server 2016 (13. ” Select the vault database(s). The Reorganize Index task encapsulates the Transact-SQL ALTER INDEX statement. The index front is stable, no change. To rebuild use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__ REBUILD. These scripts are widely tested in the community and are much flexible so that you can. This means there is only 140-ish byte free per page. dm_db_index_physical_stats (NULL, NULL, NULL, NULL, NULL); GO. You should intelligently do index reorg and rebuilds. I know the sql to perform this action on all indexes in a table is. Rebuilding an index can be either an online operation or an offl ine operation, depending on several factors. The simple reason which comes to my mind is rebuild should be done only when index is fragmented. Additionally, after reorganizing indexes it is reasonable to update the statistics as this operation does not update the statistics like the index rebuild operation. 例えば、10 % 以上 30 % 未満であれば再構成 (Reorganize)、 30% 以上であれば再構築 (Rebuild) するとすれば、上記の. Executing this query requires the VIEW SERVER STATE permission. SQL Server Rebuild. TheSQLGuru (10/19/2014) Most likely cause is simply that you are reorging wth too much fragmentation. I used this approach to improve performance and it worked perfectly for a long time. We should reorganize indexed with. Reorganizing also compacts the index pages. The link points to SQL Server 2014 docs, but the syntax should work on 2005 and 2008 as well. The fi rst factor is whether you have SQL Server Standard Edition or SQL Server Enterprise Edition. Product REBUILD GO Index Reorganize : This process physically reorganizes the leaf nodes of the index. Use the page count reported by DBCC SHOWCONTIG to get an idea of the size of the indexes (each page is 8 KB in size). The second part of this tip is intended to reduce the duration for update statistics as it pertains to both. – variable. Reorganizing an index uses minimal system resources. Feb 21, 2022, 8:01 AM. From Reorganize and Rebuild Indexes. Hallengren website has an option to reorganize indexes say with 5% Fragmentation, and rebuild for 30% Fragmentation. ALTER INDEX [myIndex] ON [dbo]. I am a new DBA to a SQL 2005 production Report server. 2. 3,895 9 51 77. Identify and remove index fragmentation – this is obviously what we have been talking until now and the biggest part of the SQL index maintenance. The. 1 Answer. SQL SERVER – Difference Between Index Rebuild and Index Reorganize Explained with T-SQL Script. Consider dropping the index, inserting the data, and then rebuilding the index. Reorganize Index Task Forum – Learn more on SQLServerCentral. SELECT * FROM sys. Yet, we do it at least every 2 weeks, and often times more often. CREATE INDEX IX_DisplayName ON dbo. To create a new maintenance plan, right click on Maintenance Plan and select New Maintenance Plan and the following window will open. As a result of rebuilding an index, SQL Server also updates the statistics for the indexes that were rebuilt. Once you select that option it will bring up the following screen. Last night I killed the REORG on the clustered index after almost 6 hours of execution. From Reorganize and Rebuild Indexes. ALTER INDEX ALL ON table_name REORGANIZE OR. Update Statistics. Use Index reorganize option when rate of index fragmentation is b/w 10% to 40%. By allowing an index to be rebuilt dynamically, indexes enforcing either PRIMARY KEY or UNIQUE constraints can be rebuilt without having to drop and re-create those constraints. If this catalog has many indexes this rebuild could take a long time. There is all reason to only rebuild index that are fragmented, and a good maintenance. Backup Up Database (Full)4. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance. Reorganizing tries to put the leaf level of the index back in logical order within the pages that are already allocated to the index. As a general (widely accepted) rule of thumb is . Therefore, focus on the larger indexes because their pages are less likely to be cached by SQL Server. During index optimization, nothing accesses the server other than Red Gate SQL Monitor. However, imagine that you have seven years of data. And if the reorganize is a deadlock. Hi, We have SQL Server 2005 EE 62 bit with SP3. . Reorganize an index For rowstore indexes, the Database Engine defragments only the leaf level of clustered and nonclustered indexes on. . If you have a choice, then REBUILD. e. Factors to consider while Rebuild/Reorganize of index in SQL Server 2012. These pages can get empty space on them and become out of order over time as well. Method 2: Manually create rebuild job using scripts and scheduled as. 3. Index fragmentation is pretty meaningless in regards to performance. REORGANIZE Tells SQL Server to perform a master merge, which involves merging the smaller indexes created in the process of indexing into one large index. But commit your whole transaction before reorganize. Jan 11 at 14:24. dm_exec_requests showed the REORG was only 55%. Approved By Raja Jegan R Updated on October 18, 2023 Min Reading 4 Min Summary: MS SQL Server chooses not to use an index when it becomes fragmented. An index rebuild will always build a new index, even if there’s no fragmentation. If an index is between 10% and 30% fragmented, I will REORGANIZE the index and UPDATE the statistics. That can be found using the STATS_DATE function. This means you will need less free space in your user database during an index rebuild operation and more free space in tempdb. When you rebuild an index, SQL Server actually resorts the data of the index and uses a new set of index pages. [Test] REBUILD WITH (ONLINE = ON); Additionally, I would only rebuild indexes which require it. ALTER DATABASEdb_name SETREAD_COMMITTED_SNAPSHOT ON go Alter index Index_name on table_name. Compaction is based on the existing fill. Check total_pages in sys. For more information, see Data Types (Transact-SQL). if the index has: less than 5% logical fragmentation, don’t do anything. Modifying a SQL Server Maintenance Plan. I think there is another way to rebuild fragmented index, You can create an sp and scheduled it via SQL Server Agent or via task scheduler. Ignore anything with less than 15-20 pages. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance When you perform online index operations, the following guidelines apply: Clustered indexes must be created, rebuilt, or dropped offline when the underlying table contains the following large object (LOB) data types: image, ntext, and text. To create a new job, right click on SQL Server Agent, select New and then Job. SQL Server, MVP, M. Reorganize: Reorganize indexes with between 11-30 percent fragmentation. It is used when the operation takes a. " But following the Russ's reply the REORGANIZE is a more time expensive operation the REBUILD one. ALTER INDEX [PK_SalesOrderDetailEnlarged_SalesOrderID_SalesOrderDetailID] ON [Sales]. x) and in Azure SQL Database, we recommend using ALTER. This allows you to interrupt the rebuild and preserve the work already done. ALTER INDEX index_name ON table_name REORGANIZE OR. Select * from sys. Yes -. You can even stagger which indexes get rebuilt when and perhaps pick the top N index, based on fragmentation level, and REORGANIZE a certain number of them each night. With dbForge Index Manager, you can instantly rebuild and reorganize SQL Server indexes in visual mode or generate SQL scripts for future use. #1637994. You should also include page_count value in your query. We want to create an index. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. . In it, enter the Job name, owner, optionally Category. ”. Reorganize Index Log Generation Now here is the final demo of Reorganize the Index, it generates lots of Transaction Log records, a very simple demo, we will capture transaction log using sys. In decades of working with MS SQL Server at a many companies, I've never ONCE had to rebuild the indexes in order to fix a performance problem. Create jobs to automate maintenance – create a SQL Server Agent job that will automate SQL index maintenance. Books Online for ALTER INDEX (Transact-SQL) Free index maintenance tool (and much more) Tags; index fragmentation;SQL Server 2016 allows customer to defragment this index using the familiar ALTER INDEX <index-name> REORGANIZE command instead of using a heavy hammer approach of rebuilding the index. WITH (ONLINE=ON) causes locking. Reorganizing an index uses minimal system resources. The MSDN page says this about reorganizing and rebuilding indexes: The SQL Server Database Engine automatically maintains indexes whenever insert, update, or delete operations are made to the underlying data. The query causing the block is in the format: ALTER INDEX [indexName] ON tableName REORGANIZE. It's better to do reorg on Nightly basis and Rebuild during the weekends. Updating statistics is important for query processing and optimization. To run the Maintenance plan, make sure your SQL server agent service is running. Product REORGANIZE GO. This article *recommends* REORGANIZE as the primary method to be used and then links to code that uses the same. My problem is that the reorg is running for a very long time. ALTER INDEX [name_of_the_index] ON [table_name] REORGANIZE; If you want to reorganize all the indexes on any table, you can run the following syntax. You might ask why you should do this yourself, since this is what the tuple-mover. When using columnstore indexes, the delta store may end up with multiple small row groups after inserting, updating, and. If you select one database from the "Databases" dropdown list you then get the option to. Last night I killed the REORG on the clustered index after almost 6 hours of execution. (About 1 TB of data including myIndex (non-clustered)). One option is to execute an index rebuild, which will move data around on pages. The Microsoft Docs page for SQL Server statistics states: Operations such as rebuilding, defragmenting, or reorganizing an index do not change the distribution of data. When I run a maintenance plan to reorganize and rebuild tables indexes, it fails. When you create or rebuild an index, by setting the SORT_IN_TEMPDB option to ON you can direct the SQL Server Database Engine to use tempdb to store the intermediate sort results that are used to build the index. For information about how to maintenance index, refer to MS document. For now, I have just turned off the weekly index reorganize task which is not really a good long term solution. This topic describes how to reorganize or rebuild a fragmented index in SQL Server 2017 by using SQL Server Management Studio or Transact-SQL. below line will remove the NULL value from the query. 7. Index rebuilding and reorganizing are the two methods to maintain indexes and improve database performance. -Search all indexes of a table that have 5% or more of fragmentation and page_count >= 1000. Expand Databases, and then expand the database that contains the full-text index. 3. . SORT_IN_TEMPDB means that SQL server will use tempdb to allocate the temporary space as opposed to allocating space in the user database whose index is being rebuild. Bulk amount records are deleted and updated frequently. Largest table has around 500. 環境SQL Server 2012参考前回の以下の投稿に若干手を加えて作成しました。SQL Server の指定したテーブルのインデックス名を取得する方法ストアドプロシージャを実装するC…According to BOL:’In SQL Server 2005, sp_updatestats updates only those statistics that require updating based on the rowmodctr information in the sys. The guidance from Microsoft is that indexes be rebuilt if the fragmentation is over 30% and reorganized if the fragmentation is between 5 and 30%. before i answer your question is the database on simple recovery. But no help, the rebuild itself not working. dm_tran_database_transactions DMV:This offline index rebuild could be done at the table or the partition level. Obviously this isn't the same as index reorganize, so I'm still trying to think what does reorganize file technically mean. Sysjobhistory index "nc1" that is on job_id, its fragmentation does not go less than 66. Statistics on indexes automatically get updated when the indexes are rebuilt. SQL Server index fragmentation is unavoidable, but you can minimize the negative effects of fragmentation on database performance. This tool provides index analysis to manage index defragmentation, including rebuild and reorganize fragmented indexes . That's why as a rule of thumb, for fragmentation greater than about 30%. You can also change this threshold via parameters. 23%. REBUILD will not just rebuild index, but also force update of corresponding statistics. When you double click on this task the following screen appears. Surly not, the Maintenance Plan was created in the current Server itself. dm_db_index_physical_stats (under the Examples -> D section: Using sys. These pages can get empty space on them and become out of order over time as well. A few thing to consider: Can you insert the data in the order of the index? This will reduce fragmentation. This job needs to be scheduled and ran on a weekly basis due to large data load. It is an on-disk structure that comprises of keys that point to one or more columns in the table or view. To create a new maintenance plan, right click on Maintenance Plan and select New Maintenance Plan and the following window will open. You can use Ola's Index maintenance solution or Michelle Ufford's - Index Defrag Script. Mar 8, 2021, 2:47 PM. Does database on which tables reside have database owner. @OnlyModifiedStatistics = 'Y'. SQL Server 2005 Index Rebuild/Reorganize. Under Select a page, select Options. Sorted by: 1. DECLARE. Rebuild Index using ApexSQL Defrag ApexSQL Defrag Overview. The REORGANIZE modifier for ALTER INDEX is not currently supported by Azure SQL. > 30% ALTER INDEX REBUILD WITH (ONLINE = ON)*. 3. This means loading the table and building all nonclustered indexes before moving on to the next one. dm_db_index_physical_stats DMV to identify the fragmentation. ALTER INDEX CCI_TEST on DBO. SQL Server NULL Index. When you reorganize the index, you go through the existing index, cleaning up blocks for deleted records etc. Let it run. I have maintenance job on SQL Server 2012 Enterprise Edition that runs daily to check index fragmentation and reorganize or rebuild the index based on the percentage of fragmentation. For more information about this enhancement, check the SQL Server 2016. dbForge Index Manager provides smart index fixing and fragmentation. Index should be reorganized when index fragmentation is between 10% to 40%. It was trying to do so because when. (About 1 TB of data including myIndex (non. A table may only have one columnstore index on it at a time, regardless of whether it is clustered or nonclustered. 11. If You have few indexes in. By allowing an index to be rebuilt dynamically, indexes enforcing either PRIMARY KEY or UNIQUE constraints can be rebuilt without having to drop and re-create those constraints. The Page Fullness is 98. Test all three and see which is fastest and which gives the least index fragmentation. This task uses the ALTER INDEX REORGANIZE statement with SQL Server databases. Expand Management in the Object Explorer> Right click Maintenance Plans> Maintenance Wizard> Create Plan for Rebuilding Indexes. Rename. ;WITH cte AS ( SELECT object_id, index_id, partition_number, rows, ROW_NUMBER () OVER (PARTITION BY object_id, index_id, partition_number. Hi, Added an index maintenance job (Hallengren) to a database (SQL Server 2016) with a few large tables. How Fragmentation Hurts SQL Server Performance. If the page_count is less than 1000 (or whatever you decide) then you should ignore the index. File type (Data), group (PRIMARY) Name () Shrink Action = reorganize pages (=move to front), Shrink File *. On a small table just leave it alone. SQL Server Maintenance plans – Maintenance plans are shipped with SQL Server and are nice for some tasks. Reorganizing the indexes: ALTER INDEX ALL ON dbo. Reorganizing or rebuilding a cluster index does not have any impact on the non-cluster indexes in SQL Server 2000 SP4 or above, or any version of SQL 2005 or. Select the Compact large object column data check box to specify that all pages that contain large object (LOB) data are also compacted. When reorganizing an index, SQL Server acquires an Intent-Exclusive lock on the index B-tree. Use the Rebuild Index Task dialog to re-create the indexes on the tables in the database with a new fill factor. 1. The script will do a reorg if fragmentation goes over 5 %. indexes ind ON ind. To rebuild or reorganize indexes manually, head over to the Fragmentation tab. This is because the Rebuild Index task will destroy all the indexes and build it again from scratch, without considering the fragmentation percentage. some action needs to be taken to remove the ghosted records. Rebuild the Indexes if the Fragmentation level is > 30%. Expand the Indexes folder. The problem is that the size is getting out of control, I can see up to 99% fragmentation in the Primary Key clustered indexes. The below query rebuild or Reorganize only the necessary Indexes instead of all index rebuild, As a general recommendation the index need to rebuild that's get fragment percentage more. Over time these modifications can cause the information in the index to become scattered in the database (fragmented). I know the sql to perform this action on all indexes in a table is alter index all on table_name reorganize; But I only want to rebuild or reorganize if . Reorganize Index. ixRebuild @fillfactor int = 100, @Force bit = 0, @Schema varchar (255) = NULL, @Table varchar. In this article. This procedure automatically chooses whether to rebuild or reorganize an index according to its fragmentation level, amongst other parameters, and update statistics. Right-click the Maintenance Plans folder and select New Maintenance Plan. Rebuild or Reorganize SQL Index. The index fragmentation level can be found using the sys. I don't remember if IDENTITY INSERT ON will help.