We recently switched to Ola Hallengren's maintenance script and automated the deployment of MaintenanceSolution. Navigate to Tasks / Shrink / Database. REORGANIZE. To run the Maintenance plan, make sure your SQL server agent service is running. Default SQL Server value is 0 or 100%, which means that no free space should be left on each page. – Ed B. Index automation Job script. In this article. Expand the Indexes. Follow. Here are a couple of examples. m. Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. . Reorganizing also compacts the index pages. Total fragmentation is 96% page fullness 66%, avg row size is 20,. Resolution: Reorganize and rebuild indexes. The purpose is to reduce the size of database and increase the db performance. If you cancel a rebuild operation midway, it. We need to drag and drop tasks from the Toolbox (to open the toolbox use Ctrl + Alt + X) into the gray workspace area on the bottom as shown in the below screenshot. Sorry No idea why this happened. So your db need to have: data space to accomodate your new index, data space to make a sort since you used SORT_IN_TEMPDB = OFF, and it needs log to be large. This method can help when. Summary: SharePoint Server uses SQL Server to store most of the content for the Web site and configuration settings. Unfortunately I didn't try the reorganize between the above 2 troubleshooting steps, so I am not sure which one did the trick, but i am leaning towards the PK. Monitor tempdb during rebuild operations. Expand Databases, and then expand the database that contains the full-text index. Custom SQL Server Index. To correct index fragmentation, you can reorganize an index or rebuild an. Coming to update stats, I would prefer to do it with Full Scan depending on the size of the databases. There are two ways of doing that: (i) by using the ‘ DBCC SHOWCONTIG ‘ command, and (ii) by using the ‘ sys. In an MS-SQL Server. To fix the fragmentation either rebuild or reorganize the index on the table. To create a new job, right click on SQL Server Agent, select New and then Job. LDAP_ENTRY. 2. ” Select the vault database(s). No – alter index rebuild or reorganize. Create an agent WMI alert ('Reorganize Relief Valve') on a performance condition. There’s no hard and fast rule here but I generally say where. Rebuilding an index means that a whole new set of pages is allocated for it. In the infrequent cases where you do need to reorganize or re-build index, consider these: Run index maintenance during off peak period. From SQL Server 2012 Enteprise and later there is not such restriction. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Columnstore indexes are the standard for storing and querying large data warehousing fact tables. When I run a maintenance plan to reorganize and rebuild tables indexes, it fails. The index front is stable, no change. Hallengren website has an option to reorganize indexes say with 5% Fragmentation, and rebuild for 30% Fragmentation. before i answer your question is the database on simple recovery. This is a powerful feature that you can use to your advantage. Please refer to SQL Server Maintenance Plan Reorganize Index and Update Statistics Tasks to get more information about how to design the maintenance plan. ALTER INDEX ALL ON [table_name] REBUILD; Additionally, please note that index reorganization is an online operation and index rebuilding is an offline operation unless explicitly specified as an online. DROP INDEX when you are dropping a nonclustered index. Click OK. Right-click the table on which you want to specify an index's fill factor and select Design. Click the plus sign to expand the Tables folder. Yup, that is one perfectly valid way. As visible in the above image, REBUILD and REORGANIZE are the two available choices to play out the trim operation over the page. As a generally accepted good practice reorganize only when ragmentation of index is between 5 to 30 % for anything more than that rebuild the index. The reason we want to load. Spatial Index. -Search all indexes of a table that have 5% or more of fragmentation and page_count >= 1000. ALTER INDEX [myIndex] ON [dbo]. For a dedicated SQL pool table with an ordered CCI, ALTER INDEX REBUILD will re-sort the data using tempdb. The table can be in a local or a remote database. The alternative is to do an index reorganize, either using my old DBCC INDEXDEFRAG or the new ALTER INDEX. Basically, an index rebuild copies the index to another place. An index rebuild will always build a new index, even if there’s no fragmentation. Recall the paper example from above: a rebuild would be like reprinting the document in the correct order and trashing the old ones. The algorithm to build an index from scratch is different to that which maintains it as data arrives so these non-clustered indexes will be unfragmented too. Instead of our phone book having 1,000 pages that are 100% full, we might have 1100 pages that are only 90% full. After finding out almost all databases on my SQL Server had fragmentation over 40%, I decided to do an index rebuild on all tables using a fill factor of 80. A more intelligent way is to check fragmentation first then rebuild or reorganise. To work around this, try the following methods: Method 1 ( recommended ): Limit the number of full-text indexes in the same catalog. INDEX index-name Specifies the index to use when reorganizing the table. The following index operations require no additional disk space: ALTER INDEX REORGANIZE; however, log space is required. The Full-Text Engine in SQL Server is fully integrated with the query processor. Rebuilding basically creates an entirely new copy of the index, and is much more effective at reducing fragmentation - but this comes at a cost, both in terms of time and disk space. A clustered index's key columns are called a clustering key. Here is a simple query to check fragmentation on your existing indexes:1 Answer. The first and most popular method is to rebuild indexes. Index Rebuild operation first drops and then recreates the index. We are using clustered columnstore index in SqlServer 2016 for 400M rows. Online rebuilds are online available on the Enterprise version of SQL Server and your version probably isn't, so just set the operation not to be run "Online" on you Wizard. Inadequate disk space can degrade performance or even cause the index operation to fail. I don't think Windows SQL Server Maintenance has this option yet. To solve this, I want to use the REORGANIZE operation every time. I would prefer to rebuild the indexes where the fragmentation percent of the indexes is greater than 30% and a Re-org of indexes where fragmentation percent is in between 9% and 30%. Reorganizing an Index should be done when you have elevated amounts of white space within your index (i. To update all statistics in a table. SQL Server does not maintain when an Index was last rebuild, instead it keeps information when stats were last updated. When rebuilding offline your index is completely unavailable, but the operation is faster than that online. Er…. ), which reorganizes all the indexes on the. It is compatible with all versions of SQL Server 2005 , 2008 , 2012 , 2014 and 2016. SQL Server Index Rebuild and Reorganize Script. #1637994. For more information, see ALTER INDEX (Transact-SQL). Since you issued a REBUILD and not a REORG, cancelling the query will result in a rollback which will take even more time. If you use Ola Hallegren's scripts then you can set the thresholds for a rebuild/reorganise (say over 50% fragmentation for a reorganise, over 80% for a rebuild) and this can run overnight out of hours. It was trying to do so because when Index is REBUILT (with. indexstats. Is this possible to do? In earlier versions of Microsoft SQL Server it could cause system slowdown to reorganize or rebuild a large index. So now once you have identified the high fragmentation level in your database, which could. Create table and compressed index. Script to Manage SQL Server Rebuilds and Reorganize for Index Fragmentation. You can apply a new fillfactor when you rebuild an index. To rebuild an index means to create anew one, then drop the old one. index_resumable_operations to monitor and check the current execution status for resumable index rebuilds. REORG INDEXES/INDEXES command reorganizes indexes. In this article. [Test] REBUILD WITH (ONLINE = ON); Additionally, I would only rebuild indexes which require it. The possibility to. These are two different modes to remove index fragmentation. Hallengren website has an option to reorganize indexes say with 5% Fragmentation, and rebuild for 30% Fragmentation. Here is the image for additional clarity. Default SQL Server value is 0 or 100%, which means that no free space should be left on each page. I used the sp_who2 procedure to see which queries were waiting, and which other query they were blocked by. Step 1. Also, in our nightly database maintenance plan, I have update statistics, reorganize index and rebuild index tasks setup. Rebuild/Reorganize working fine. . create table dbo. 10/28/2022. On the Table Designer menu, click Indexes/Keys. SQL Server 2005 Index Rebuild/Reorganize. Well, I’d wager some of it is backwards compatibility. 1. It can be done with online option in enterprise edition. In Object Explorer, click the plus sign to expand the database that contains the table on which you want to specify an index's fill factor. The performance benefit may not be noticeable for indexes that are used primarily for seek operations. This procedure automatically chooses whether to rebuild or reorganize an index according to its fragmentation level, among other parameters, and update statistics with a linear threshold. May 5, 2010 at 8:00 am. 3. Start SSMS and connect to the SQL Server database engine. Reorganizing only works on the leaf pages. However, you can create a staging table insert all rows into that, drop original table and rename staging table to original. Index rebuilds look. This could be further tweaked to handle only indexes that need maintenance based on fragmentation levels as well as then doing either an index reorg or an index rebuild. In both these scenarios they are blocked by session 54 – the index rebuild. 1. This option will rebuild your indexes so that the data is laid out in a more efficient manner when queries are run to use the data. SQL Server ALTER INDEX Syntax. No, there is no auto-magical defragging of indexes. The Reorganize Index task also includes an option to compact large object data. That can be found using the STATS_DATE function. dm_db_index_physical_stats (under the Examples -> D section: Using sys. x) では、REORGANIZE は CLOSED 行グループを列ストアに圧縮するためにのみ使用されます。 最適化操作を実行し、すべてのデルタ行グループを列ストアに強制的に移動する唯一の方法は、インデックスを再構築することです。Yes, just the table and any query that tries to access that table. ALTER DATABASEdb_name SETREAD_COMMITTED_SNAPSHOT ON go Alter index Index_name on table_name. However, these numbers are only for general guidance as a starting point for your environment. 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. FileID, a. @LeeWalters shrink is done, and yes, due to disk issues, not possible to add drives, that's why, in addition, db is populated with blob data, so the question is more from the index fragmentation side. Particularly if you are in full recovery. 4. 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. Our Production instance is running SQL Server 2014. In this book "Professional SQL Server 2012 Internals and Troubleshooting" I've read this passage: "If you see indexes that have more than 10% fragmentation, you need to decide whether to reorganize them or simply rebuild them. Someone else set it up. Rebuilding an index means that a whole new set of pages is allocated for it. It doesn’t work on the intermediate pages between the root and the leaf. Similarly, removing fragmentation in a. ALTER INDEX index_name ON table_name REORGANIZE OR. Values: - 0: The script will reorganize or rebuild the fragmented indexes. Depending on the type of index and the Database Engine version, a rebuild operation can be done offline or online. There needs to be an automated Index defragmentation job that will either reorganize or rebuild the indexes based on the fragmentation level for a specific table in a specific database. I have seen indexes do this when there are too few pages to logically order them, and one insert or update could literally take it from 0 to 99% fragmented or rebuilding does not have any effect. cyNumber) AS cyNumber, MAX (b. skNumber) AS. 0 to SQL Server 2016 there is no feature to rebuild index automatically. I'd just add that adding the line PRINT @sql after the SET @sql =. Rebuilds are generally faster. Reorganize the data on the data and index pages by rebuilding indexes with a new fill factor. You should also include page_count value in your query. Lock durations are short and will cause minimal blocking of queries. Expand the Indexes folder. We check the time for sample select query - it was 2s just after index creation. This means loading the table and building all nonclustered indexes before moving on to the next one. Otherwise you're holding an exclusive lock on the table/partition before you start the reorganize. Expand Tables. We will call this stored procedure Maintenance. You will often see advice to perform a REBUILD on highly-fragmented indexes, rather than a REORGANIZE-- This is because rebuilding from scratch can be more efficient. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. Additionally, after reorganizing indexes it is reasonable to update the statistics as this operation does not update the statistics like the index rebuild operation. He has the best practices coded into his scripts, so it should serve you well. However, you can create a staging table insert all rows into that, drop original table and rename staging table to original. sql to our customers's SQL Server instance. SQL: Procedure for rebuild and reorganize indexes like Microsoft says. The difference is easily visible. For more information, see CREATE INDEX (Transact-SQL). In the IndexOptimize procedure, you can define a preferred index maintenance operation for each fragmentation group. x), you can create nonclustered B-tree or rowstore indexes as secondary indexes on a clustered columnstore index. -- Compute fragmentation information for all full-text indexes on the database SELECT c. Syntax ALTER INDEX index_name ON table_name. Use the online version of the Rebuild Index task ; Use the Reorganize Index task followed by the Update Statistics task; If you have the Enterprise Edition of SQL Server, the Maintenance Plan Wizard offers a Keep index online while reindexing option, which means that the index will continue to be available to users even while it is being. dm_db_index_physical_stats function is the preferred tool to use to check index fragmentation on any CA or DA database table. The Full-Text Engine compiles and executes full-text queries. Rebuild/Reorganize indexes weekly – As it was mentioned previously, this will depend on the environment, situation, database size, etc. Use solutions such as Adaptive Index Defrag to automatically manage index defragmentation and statistics updates for one or more databases. I have been advised by a contracted SQL Server expert that, after any change in # of CPUs and/or available memory, I should reorganize all indexes and then update all statistics or SQL Server will not make the full use of the new resources. Columns with text, image, ntext, varchar (max), nvarchar (max) and varbinary (max) cannot be used in the index key columns. If you're looking for whenif the index was ever rebuilt, the Ola sp does have the ability to log to a table and the previous DBA hopefully utilized this feature. If the tables get more than 15% fragmented, performance is very negatively affected. To create SQL database maintenance plan, launch SQL Server Management Studio > expand the database instance > Management > right-click on the maintenance plan > New Maintenance Plan. REORGANIZE INDEX blocks other queries. This can be demonstrated by small test. I still see questions about SQL Server 2000/2005 pop up on Stack Exchange. Recall the paper example from above: a rebuild would be like reprinting the document in the correct order and trashing the old ones. ". If you read complete article it was trying to point out the commands or operations in SQL Server which would require additional disk space and others that would not. Bulk amount records are deleted and updated frequently. I used the sp_who2 procedure to see which queries were waiting, and which other query they were blocked by. index_id > 0 -- Indexes. g. in case you aren't on SQL enterprise edition, you cannot rebuild WITH ONLINE, hence you can cause additional blocking; ad. Checking the reorganize files box and as a result, shrinking the database file(s) will only impact the database negatively. There are two options to fix fragmentation. e. Create an agent WMI alert ('Reorganize Relief Valve') on a performance condition. When you rebuild, SQL creates a new fresh index. Thank you, ShamAnswers. (About 1 TB of data including myIndex (non-clustered)). Designing efficient indexes is paramount to achieving good database and. Frequency of the maintenance should be considered with the goal of minimizing impact of log generation. Rebuild or Reorganize SQL Index. If you rebuild the index the stats are updated anyway, so doing it again is just wasteful. INDEX_REORGANIZE Reorganizes the index. The. May be index was not there, may be you were just rebuilding the index. Categorize fragmentation percentage – Microsoft suggests that we. Monitor and track your index usage, or lack of index usage. It can be. 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…too slow alter index reorganize/rebuild (with online) I have 2 similar SQL Server installations on 2 similar GCP projects. I was going to take a look at Ola Hallengren's scripts and some other stuff but wanted to see if there was possibly a simple explanation for this. SQL Server 2012 (11. It's better to do reorg on Nightly. . This means that for a lightly fragmented index (e. On the Standard bar, click New Query. Starting with SQL Server 2016 (13. It reorgs indexes when fragmentation is below 30% else it rebuild the index. Summary: SharePoint Server uses SQL Server to store most of the content for the Web site and configuration settings. The procedure uses SQL Server ALTER INDEX command, with the REORGANIZE option NULL. If you don’t spend much time with SQL Server and you. Rebuilding indexes only does the index itself so the column stats are stale unless they hit the "20% data change + 500 records" criteria to trigger the auto-update. 1. Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly. Too many full-text index fragments in the full-text index, can lead to substantial degradation in query performance. However, each time I check (even immediately after recreating the indexes) the avg_fragmentation_in_percent shows 100%. Index should be rebuild when index fragmentation is great than 40%. Find and remove unused indexes – everything that is unused doesn’t do anything good. First, let’s look at the index in this tutorial with sample code to create a non-clustered SQL Server index on a sales table. Which is the best method to reorganize sql server database. When you rebuild, SQL creates a new fresh index. x), REORGANIZE is only used to compress CLOSED rowgroups into the columnstore. Copy and paste the following example into the query window and click Execute. 0 databases. SSC Guru. I suggest 50% for REORGANIZE, 80% or even 90% for REBUILD. GO. When using columnstore indexes, the delta store may end up with multiple small row groups after inserting, updating, and. I'd just add that adding the line PRINT @sql after the SET @sql =. Use Ola Hallengren ‘s IndexOptimize but don’t use his defaults. #1258597. This job needs to be scheduled and ran on a weekly basis due to large data. REBUILD will not just rebuild index, but also force update of corresponding statistics. To achieve availability similar to the reorganize. So, whenever I need to rebuild the indexes of my OrdersItemstable, with some millions of rows, my customers can't create/edit new orders for about 2-4 minutes. You need to do more research but basically, reorganize as often as needed to keep your fragmentation under 20-30% until you can rebuild it during off-hours. Check out my Pluralsight course on fragmentation or read. After rebuilding indexes, the application performs badly. This means every time we need to scan the. The log size shouldn't be unrestricted. SQL Fool (Michelle Ufford) has a great script to do this for you - all done and well tested by many users. It drops index entirely and creates it from scratch. This opens the Full-text. To learn more about index rebuild and reorganize operations, review this tip. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. WHY ? Rebuilding is massive time resource consuming, reindexing more fast than rebuildIn SQL Server Management Studio, in Object Explorer, expand the server. Depending on the type of index and database engine version, a rebuild operation can be done online or offline. 21 Code: 0xC0024104 Source: Reorganize Index Task Description: The Execute method on. We have decided to use the following code to compute a fragmentation % for each full-text index. Reorganize Index. @databaseToCheck (optional) Values: - NULL: It will scan all databases with compatibility level SQL Server 2005 (90) or later for fragmented indexes. or to reorganize use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__ REORGANIZE. Here's another script to add to the list. If you are using Windows Internal Database, you will need to use the sqlcmd utility, which can be. つまり、断片化率がある一定の閾値を超えた場合は再構築（REBUILD）、そうでない場合は再構成（REORGANIZE）を推奨する、というものです。 ただし、再構築をオンラインで実行するためにはSQL ServerのエディションがEnterpriseでなければいけません。 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 following index operations require no additional disk space: ALTER INDEX REORGANIZE; however, log space is required. If the index’s design or your SQL Server edition doesn’t allow for that, it’ll perform the last resort – an offline index rebuild. For general guidance regarding index fragmentation, when fragmentation is between 5% and 30%, reorganize the index. Proceed to the Steps tab: Clicking on New. Using SQL Server Management Studio: In the Object Explorer pane navigate to and expand the SQL Server, and then the Databases node Expand the specific database with fragmented index Expand the Tables node, and the table with fragmented index Expand the specific table Expand the Indexes node. (About 1 TB of data including myIndex (non. All nonclustered indexes will include the clustered key by default, in order to perform lookups when necessary. For more information, see Data Types (Transact-SQL). There is all reason to only rebuild index that are fragmented, and a good maintenance. 0. When I ran the query again, this was the result: Fragmentation over 70% for 12 indexes, over 30% for 15 indexes. ALTER INDEX [PK_SalesOrderDetailEnlarged_SalesOrderID_SalesOrderDetailID] ON [Sales]. This would also keep the original order of columns. @OnlyModifiedStatistics = 'Y'. Poorly designed indexes and a lack of indexes are primary sources of database application bottlenecks. If a nonclustered index is being rebuilt, a shared lock is held on the table in question during the operation. The performance benefit may not be noticeable for indexes that are used primarily for seek operations. 5) Perform full database backup. Feedback. This topic provides. I have an index on a . It defragments the leaf level of clustered and nonclustered indexes on tables and views by physically reordering the leaf-level pages to match the logical, left to right, order of the leaf nodes. Reorganizing only works on the leaf pages. [FactInternetSales] REBUILD PARTITION = ALL WITH (PAD_INDEX = ON, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF,. Reorganizing should be used at lower (<30%) fragmentations but only rebuilding (which is heavier to the database) cuts the fragmentation down to 0%. Reorganize does not holds blocking locks. You can also set a threshold so that it only considers indexes over a certain size so you're not doing unnecessary rebuilds on tiny indexes. It defragments the leaf level of clustered and non-clustered indexes on tables and views by physically reordering the. To add to this, you need to learn your system and how it's used. The. I'm currently using the approach described here: sys. dm_db_index_physical_stats DMV to identify the fragmentation. 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. we have 5 databases in our instance, in that 2 databases are online and remaining are in offline. Share. – As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. For a dedicated SQL pool table with an ordered CCI, ALTER INDEX. Here a Microsoft Engineer states that in most scenarios is not needed, but in the same forum thread I shared my experience step-by-step with images on how you can schedule a database maintenance on Azure SQL. I used this approach to improve performance and it worked perfectly for a long time. Reorganize Index Task Forum – Learn more on SQLServerCentral. As tables grow and shrink, this fragmentation can ultimately play a role in how well SQL runs. [CCS-KIDS1] GO. This is how records are made unique in the context of a clustered index. Reorganizing an index uses minimal system resources. Create a execute sql task and schedule it through sql agent . 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、. SQL Server doesn’t automatically correct index fragmentation problems. Locking. You can go the easy way and use SQL Server Maintenance Plans, but unfortunately they’re very simplistic: you can only say “rebuild all the indexes” or “reorganize all the indexes”. Disk space is an important consideration when you create, rebuild, or drop indexes. In the Select Maintenance Tasks page, select the following tasks: Reorganize. FullTextIndexOptimize. August 1, 2013 at 3:52 pm. Right-click Maintenance Plan and select Execute. On the Define Reorganize Index Task page, select the server or servers where you'll be moving index pages into a more efficient search. Reorganizing an index only deals with the fragmentation that exists, and the more fragmentation there is, the longer a reorganize will take. the year and month columns. Quote from "Microsoft SQL Server 2000 Index Defragmentation Best Practices": "Fragmentation affects disk I/O. Use the online version of the Rebuild Index task ; Use the Reorganize Index task followed by the Update Statistics task; If you have the Enterprise Edition of SQL Server, the Maintenance Plan Wizard offers a Keep index online while reindexing option, which means that the index will continue to be available to users even while it is being. 1. ALTER INDEX ALL ON table_name REORGANIZE OR. If the index’s design or your SQL Server edition doesn’t allow for that, it’ll perform the last resort – an offline index rebuild. SELECT a. If the index creation is interrupted, the index isn't re-created. indexesのindex_id）または1、0、-1、-2のいずれか指定できます。 -1は、テーブルに関連するすべてのタイプのページ（行内データ、ローオーバーフローデータ、IAM、すべてのインデックス）についての完全な. It checks the SQL Server licences, if Enterprise it will rebuild the index online else it. The. There's a general consensus that you should reorganize ("defragment") your indices as soon as index fragmentation reaches more than 5 (sometimes 10%), and you should. TEST_INDX(id int, bla varchar(255)); CREATE INDEX IX1 ON dbo. To create a linked server to azure, you can see this SO link:I need to add a linked server to a MS Azure SQL ServerSQL Server 2016, that comes with many new features and enhancements to the existing features, bring new enhancements to a number of SQL Server Maintenance Plans tasks including the indexes Rebuilding and Reorganizing tasks, in addition to the Check Database Integrity tasks. Note that the time it takes to complete the operations depends on the size of the database and how fragmented the indexes. Beginning with SQL Server 2016 (13. Then, choose New, Job to create a SQL agent job. Artemakis Artemiou. 2. Start the Microsoft SQL Server Management Studio client, and then log in to it. For a reorganize they are not, but just because a reorganize happened does not necessarily mean that a stats update is necessary. The more the fragmentation you need to rebuild if its less you can reorganize. [Test] REBUILD WITH (ONLINE = ON); Additionally, I would only rebuild indexes which require it. Therefore, you do not need to update statistics after performing ALTER INDEX REBUILD, DBCC DBREINDEX, DBCC INDEXDEFRAG, or ALTER INDEX REORGANIZE operations. It’s advisable to remove those often. Reorganize/Rebuild SQL Server database indexes using ApexSQL Defrag ApexSQL Defrag is a 3rd party tool made specifically to automatically fix index fragmentation in SQL Server databases. To create SQL database maintenance plan, launch SQL Server Management Studio > expand the database instance > Management > right-click on the maintenance plan > New Maintenance Plan. In this article. We are aware that we. ) Reorganize = fragmentation level is between 5% and 30%. dm_db_index_physical_stats fincation have index_id which display heap and index informatiob. You can use Ola's Index maintenance solution or Michelle Ufford's - Index Defrag Script. The index can be rebuilt using ALTER INDEX REBUILD T-SQL command. 2.