This is great if you want to release some space quickly. The Reorganize Index task encapsulates the Transact-SQL ALTER INDEX statement. If an index contains less than 100 pages, I will perform no maintenance. Then, drag and drop Rebuild Index Task into the maintenance plan designer. ” Select the vault database(s). I am getting confused with choosing Index Reorganize/Rebuilding of indexes based on avg_fragmentation_in_percent returned by sys. The database is using the Simple Recovery model. After it completes, we can see the job was successful. The fi rst factor is whether you have SQL Server Standard Edition or SQL Server Enterprise Edition. SELECT * FROM sys. Check the column, avg_fragmentation_in_percent and if its greater than. As a result of rebuilding an index, SQL Server also updates the statistics for the indexes that were rebuilt. If the index is disabled, rebuilding brings it back to life. The discussion of columnstore indexes thus far has focused on clustered columnstore indexes that target a primarily OLAP workload. REORGANIZE, but shrink is going to take an age, and then you’ll generate a ton of log doing the fragmentation removal. partition_number The number of an existing index partition to rebuild/reorganize. I cannot understand the reason, can you ?. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. Sumanta Roy (5/26/2011) Select Name as IndexName, STATS_DATE ( object_id , index_id ) as IndexCreatedDate. REORGANIZE seems to work as well as REBUILD all the time. 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. @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. dm_db_index_physical_stats) is <1000 you don't need to rebuild or reorganize such. We have a maintenance script which analyses the page_count and fragmentation of the indexes and follows the following guideline:-. Rebuild of indexes is the prime job of a DBA as heavily fragmented indexes can degrade query performance and cause your application to respond slowly. As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. Microsoft's guidance on index reorganize and rebuild supports this: For example, if a given index is used mainly for scan operations, removing fragmentation can improve performance of these operations. Larger indexes have more intermediate levels and pages. Proceed to the Steps tab: Clicking on New. x) implemented major performance improvements for these index operations. Therefore, focus on the larger indexes because their pages are less likely to be cached by SQL Server. in this instance you can avoid re-inventing the wheel by making use of sql-server-index-and-statistics-maintenance – Stu. dm_exec_requests showed the REORG was only 55%. Rebuild the Indexes if the Fragmentation level is > 30%. 8. _in_percent > 50 AND ss. The first and most popular method is to rebuild indexes. Reorganize Index. 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. From stackoverflow page ( How Often should the indexes be re-build in sql-server DB?) i got this query : SELECT t. To run the Maintenance plan, make sure your SQL server agent service is running. It was trying to do so because when. The purpose is to reduce the size of database and increase the db performance. First you need to create a maintenance plan and select the "Rebuild Index Task" option as shown below. 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. This job needs to be scheduled and ran on a weekly basis due to large data load. Expand the Tables folder. Example #. For a more in-depth discussion of index rebuild and maintenance in SQL Server 2014 see SQL 2014 Clustered Columnstore index rebuild and maintenance considerations Consider the two trimmed row group scenarios below:AFAIK, In the Alter index statement if we use MAXdop option it is only specific for that index operation and not applicable whenever the index is used by a query. just like many things in RDBMS. reorganize pages. When reorganizing an index, SQL Server acquires an Intent-Exclusive lock on the index B-tree. If you cancel a rebuild operation midway, it. Use the Rebuild Index Task dialog to re-create the indexes on the tables in the database with a new fill factor. Here is a sample script to reorganize any index in SQL Server. 2. Updating statistics is important for query processing and optimization. Make sure to thick the Enabled checkbox. When to rebuild and when to reorganize indexes. There are two options to fix fragmentation. 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. dm_db_index_physical_stats function is avg. (Look in the Misconceptions blog category for the rest of the month’s posts and check out the 60-page PDF with all the myths and misconceptions blog posts collected together when you join our Insider list, plus my online Myths and Misconceptions training course on Pluralsight. From Reorganize and Rebuild Indexes. 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. 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. There are two options to fix fragmentation. dm_db_index_physical_stats DMV to identify the fragmentation. ALTER INDEX . Reorgs defragment the leaf level of clustered and. So it can remove some fragmentation - but only on a limited scale. If you search for index rebuilding, you will find many complex scripts on the web, but this can also be done using SQL Server Maintenance Plans which we will discuss in this article. Just go to the table, further expand the indexing folder and right after that you can right-click on it and select the option to rebuild all the indexes. The index it is running against is 78% fragmented. 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. We can also run the task by running the corresponding job in SQL Server Agent. You can query the sys. ALTER INDEX statement can be used to change the properties of an index, such as its fill factor or sort order, or to rebuild or reorganize the index. March 2, 2023 at 3:05 pm. Thanks for your. 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. ALTER INDEX [PK_SalesOrderDetailEnlarged_SalesOrderID_SalesOrderDetailID] ON [Sales]. dm_tran_database_transactions DMV:SQL: Procedure for rebuild and reorganize indexes like Microsoft says. Microsoft's guidance on index reorganize and rebuild supports this: For example, if a given index is used mainly for scan operations, removing fragmentation can improve performance of these operations. During index optimization, nothing accesses the server other than Red Gate SQL Monitor. There’s not a lot of guidance in the maintenance plan designer, so it’s not uncommon for people to rebuild every index, and. From Reorganize and Rebuild Indexes. Additionally, after reorganizing indexes it is reasonable to update the statistics as this operation does not update the statistics like the index rebuild operation. avg_fragmentation_in_percent FROM sys. Options. It is causing other queries to wait, even simple ones like: SELECT * FROM tableName WHERE indexedColumn = @value. SQL Server index fragmentation is unavoidable, but you can minimize the negative effects of fragmentation on database performance. This method can help when Change_tracking is Auto. ". Rebuild or Reorganize SQL Index. " But following the Russ's reply the REORGANIZE is a more time expensive operation the REBUILD one. Surly not, the Maintenance Plan was created in the current Server itself. The script for the index itself: ALTER TABLE [dbo]. The query causing the block is in the format: ALTER INDEX [indexName] ON tableName REORGANIZE. First, since you're literally rebuilding the index, it reorders the pages and the rows on those pages. Let’s move on to creating the Reorganize Index task via the Maintenance Plans and then Update Statistics task. 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”. the reorganize index also facing some problem like it is successfull once in three runs and twice it is failing. Designing efficient indexes is paramount to achieving good database and. Copied the LOB column to another table, dropped the column, re-created the column, and copied the data back (as outlined in this post: Freeing Unused Space SQL Server Table). . WITH FULLSCAN Are there any advantages or disadvantages to using "UPDATE STATISTICS (Index name)" as opposed to "ALTER INDEX (index name) ON. We should reorganize indexed with. From sys. 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. ALTER INDEX All ON tableName REORGANIZE;The minimum permission to create/alter index can be easily found in corresponding BOL articles CREATE INDEX (Transact-SQL) and ALTER INDEX (Transact-SQL):. 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. Index Reorganize/ Rebuild Time. This would also keep the original order of columns. Rebuilding your indexes will slow queries down. A page is a small section of a database, typically an 8kb chunk. An index reorganize can be interrupted and the worst that will happen is that a single page move operation is rolled back. A clustered index exists, along with 3 non-clustered indexes. I don't think Windows SQL Server Maintenance has this option yet. Expand the Indexes folder. Over here it will display all the indexes of the table and you can just click OK. Bad internal fragmentation (having lots of free space on the pages) means the index is bigger than it needs to be. Yes. But, fill factor is defined in index properties, and is not overriden in index rebuild settings, so I believe both operations should respect the value. ALTER INDEX REORGANIZE; however, log space is required. First, we will start the index reorganization in a session using the following T-SQL code. I'd just add that adding the line PRINT @sql after the SET @sql =. e. Clean Up History. It is compatible with all versions of SQL Server 2005 , 2008 , 2012 , 2014 and 2016. 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. Expand the table on which you want to reorganize an index. As soon we rebuild index performance resume normal (high loaded system). DBCC DBREINDEX - use to re-index with older versions (SQL Server 2000 and earlier) sys. SQL Server 2016 (13. 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. The entire index has to be read to rebuild it, so there's no reason to do a. One thing to ask! When I reorganize MSDB. When you reorganize an index, SQL Server sorts the index pages and releases the unused space within the index pages. Next the New Job window will open. Reference to below article and discussion, rebuild only if page count >=1000If you want to try : I would like you to use READ_COMMITTED_SNAPSHOT isolation level for this operation and see if you succeed. Plan B is fine. Basically there’s no really easy AND resource-efficient way to do this, which is a problem with SQL Server. Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. 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 rebuilt. #1162454. To create a new job, right click on SQL Server Agent, select New and then Job. you are reading your query result incorrect. 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. My problem is that the reorg is running for a very long time. Unless you are adding data exactly in the order of the index the index will fragment. You have two maintenance commands for indexes: Reorganize. 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 the previous SQL Server versions, using the Rebuild Index and Reorganize Index Maintenance Plans tasks to fix the database indexes fragmentation issue is not highly recommended. According to Microsoft’s best practices, it is recommended to reorganize indexes if their fragmentation level is >15% and <=30% (if >30%, a rebuild should be done). This task uses the ALTER INDEX REORGANIZE statement with SQL Server databases. Yes, rebuilding indexes will take a toll on your transaction log file. 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. The indexes that cannot be rebuild online are: Disabled clustered index ; Disabled indexed view1. You can always update statistics on their own. This to me would be a sign that constant rebuilds of that index actually aren't a good help. Reorganizing the indexes: ALTER INDEX ALL ON dbo. Expand the table on which we want to reorganize the indexes. Index maintenance usually starts 3 hours before the database full backup and ends before the full backup start. Is this possible to do? Creating a SQL Server Maintenance Plan. Reorganize (SQL Server indexes, primary keys, and unique keys) The Reorganize Indexes dialog lets you reorganize an entire index, primary key, or unique key or a single partition of that object. There are two ways of doing that: (i) by using the ‘ DBCC SHOWCONTIG ‘ command, and (ii) by using the ‘ sys. The purpose is to reduce the size of database and increase the db performance. TEST REORGANIZE WITH. Reorganizing also compacts the index pages. Using above query, you could also query the progress of backup,restore,dbcc command and so on. Rebuild Index. Next Steps This is a simple base script that could be modified into a stored procedure and also allow you to pass other parameters such as doing an index. Check indexes from the index grid and click desired defragment operation from the ribbon. They are also configured from SSMS. GO. If an index contains less than 100 pages, I will perform no maintenance. WITH (ONLINE=ON). If you don't want to grant so granular. Our Production instance is running SQL Server 2014. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. If the index’s design doesn’t allow for that, IndexOptimize will try to rebuild the index online. Last weekend the index maintenance took more than 5 hours and the full backup was running at the same time. The procedure uses SQL Server ALTER INDEX command, with the REORGANIZE option NULL. Yes -. Index fragmentation increased significantly after rebuild. To execute our task, we can right-click on the plan and choose Execute. You cannot say, “If the index is 45% or more fragmented, rebuild it– otherwise do nothing. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. It is an on-disk structure that comprises of keys that point to one or more columns in the table or view. However, recently this approach has. How Fragmentation Hurts SQL Server Performance. 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. This is a best practice for performance when you rebuild or reorganize indexes. Factors to consider while Rebuild/Reorganize of index in SQL Server 2012. DBCC DBREINDEX rebuilds an index for a table or all indexes defined for a table. ALTER INDEX CCI_TEST on DBO. Working this way is usually optimal, since SQL Server does not have to update the NCIs while the data is being imported. If rate of Index fragmentation increased then index de-fragmentation is become required. alter index all on table_name reorganize; But I only want to rebuild or reorganize if fragmentation percentage on each index is between a certain range. Large objects (LOBs) are stored in different "pages". Both versions allow you to specify the. 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. •DatabaseBackup: SQL Server Backup •DatabaseIntegrityCheck: SQL Server Integrity Check •IndexOptimize: SQL Server Index and Statistics Maintenance. . We will call this stored procedure Maintenance. This means you can grant alter table on every table of interest that already exists. If you want to rebuild an index the syntax is below: ALTER INDEX. Edit 2: Nikita added a good point on moving the data to a different filegroup as an option to exporting it outside SQL Server. 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. The Query Optimizer. You can do maintenance in phases, where each maintenance phase covers a subset of. Hi Team, Today when I go through some of the SQL Server performance videos, found one interesting video (Please find the link below), where he said that rebuilding indexes is a very expensive thing and it will clear the cache every time an index rebuild happens, (It means that we indirectly killing the SQL Server everything we. ALTER INDEX CCI_TEST on DBO. Rebuild if > 30%. I wonder if there is just something weird about the way. But your index will also use more space. 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. REBUILD. Here's another script to add to the list. Rebuild Index. Defragmentation in Practice. Enable Row Level and Page Level Locks. Er…. This REBUILD option is available in SQL Server 2008 onwards. I'd just add that adding the line PRINT @sql after the SET @sql =. Here is the image for additional clarity. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. If you search for index rebuilding, you will find many complex scripts on the web, but this can also be done. ALTER INDEX REBUILD on an truncated and therefore empty table serves no purpose, so you need to amend your Plan A. or to reorganize use: ALTER INDEX __NAME_OF_INDEX__ ON. DBCC DBREINDEX rebuilds an index for a table or all indexes defined for a table. With dbForge Index Manager, you can instantly rebuild and reorganize SQL Server indexes in visual mode or generate SQL scripts for future use. If we have 10-30% fragmentation a REORGANIZE is performed, and a REBUILD is performed when we have greater than 30% fragmentation. My predecessor created a Maintenance Plan with 4 tasks: CHECKDB; SHRINKDATABASE (N'DB1',10,TRUNCATEONLY); it seems to be running a REORGANIZE on all Indexes for all Tables and Views and "Compact Large Objects" is checked; and then it UPDATE. Index automation Job script. インデックスの断片化の状態がわかったら、それによってインデックス (index) を再構成 (Reorganize)するか、または再構築 (Rebuild) するか決定します。. We have an arguments saying Index rebuild not required if page count <1000 in MS SQL server. 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. It gives you better advantage when tempdb is. @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. before i answer your question is the database on simple recovery. 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. sql to our customers's SQL Server instance. A developer coming onto a project with out of date tools is a common cause of this. Feb 21, 2022, 8:01 AM. INDEX_REORGANIZE Reorganizes the index. The answer is: it depends. April 1, 2009 at 5:07 am. Particularly if you are in full recovery. SQL Server 2019 adds resumable online index creation, and it’s pretty spiffy: 1. Recall the paper example from above: a rebuild would be like reprinting the document in the correct order and trashing the old ones. dm_db_index_physical_stats dm function. SQL Server, MVP, M. It doesn’t work on the intermediate pages between the root and the leaf. This article *recommends* REORGANIZE as the primary method to be used and then links to code that uses the same. Bulk amount records are deleted and updated frequently. If your indexes are fragmented : If index has less than 1000 pages - do not perform any index maintenance operation. We need to set these parameters for the job IndexOptimize - USER_DATABASES: @UpdateStatistics = 'ALL'. REORGANIZE, or to rebuild the index using ALTER INDEX. August 1, 2013 at 3:52 pm. 3. Because I was blamed for the slow SQL Server mainly because I. Reorganizing an index only deals with the fragmentation that exists, and the more fragmentation there is, the longer a reorganize will take. Partitions can be rebuilt individually. The possibility to. However, my SQL Server license is Standard and I can't rebuild indexes online. Answers. Product REBUILD GO Index Reorganize : This process physically reorganizes the leaf nodes of. The simple reason which comes to my mind is rebuild should be done only when index is fragmented. Statistics on indexes automatically get updated. Using above query, you could also query the progress of backup,restore,dbcc command and so on. [myTable] REORGANIZE WITH ( LOB_COMPACTION = ON ) I have the above query running for 16 days (still running), the table is a dummy table used for benchmark tests, it has over 10 Billion rows. CREATE INDEX IX_DisplayName ON dbo. Does it mean reorganize the file contents maybe. Rebuilds automatically run statistics on your indexes. 7. The documentation for alter index, for example, shows that it accepts an index_name, not an expression that might evaluate to an index name. There is all reason to only rebuild index that are fragmented, and a good maintenance. Shrinking is a wasteful operation. Index reorg only shuffles around leaf-level pages of your index and will try to compact those - but it doesn't completely rebuild the index structure. Index maintenance in my opinion is not one of them. First, we will start the index reorganization in a session using the following T-SQL code. 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. REBUILD will not just rebuild index, but also force update of corresponding statistics. Stack Overflow. ALTER INDEX ALL ON [dbo]. There are a number of differences. This operation is always online, uses minimal system resources, honors the fill factor that has been used during the creation of the index (common misconception is that reorganize operation does not take into account. For a turnkey solution, you may refer to Microsoft MVP Ola Hallengren's SQL Server Index and Statistics Maintenance. " But following the Russ's reply the REORGANIZE is a more time expensive operation the REBUILD one. Right-click the Indexes folder and select Reorganize All. Similarly, removing fragmentation in a. But commit your whole transaction before reorganize. If your indexes are fragmented : If index has less than 1000 pages - do not perform any index maintenance operation. One of the major reasons I wrote DBCC INDEXDEFRAG for SQL Server 2000 was as an online alternative to DBCC DBREINDEX. File type (Data), group (PRIMARY) Name () Shrink Action = reorganize pages (=move to front), Shrink File *. USE AdventureWorks; GO ALTER INDEX ALL ON Production. Large object data is data with the image, text, ntext, varchar (max), nvarchar (max), varbinary (max), or xml data type. Use the ReorganizeIndex Task dialog to move index pages into a more efficient search order. The more the fragmentation you need to rebuild if its less you can reorganize. Online index rebuild higher fragmentation on intermediate level. Exclusive page locks are taken on individual pages only while those pages are being manipulated. #1637994. Frequency of the maintenance should be considered with the goal of minimizing impact of log generation. These scripts are widely tested in the community and are much flexible so that you. 11:33. Reorganizing tries to put the leaf level of the index back in logical order within the pages that are already allocated to the index. Another possibly is that the index is being rebuilt and then re-fragmenting again. Backup Up Database (Full) 4. This index uses column-based data storage and query processing to achieve gains up to 10. To rebuild use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__ REBUILD. . It depends. configurations setting for fill factor. In this article. Index Rebuild vs Index Reorganize. Another option is to manually run sp_clean_db_free_space (to clean all database data files) or sp_clean_db_file_free_space (to clean a single database datafile), which will delete. Dalam indeks rowstore, SQL Server mengimplementasikan pohon B+. Syntax ALTER INDEX index_name ON table_name. ;WITH cte AS ( SELECT object_id, index_id, partition_number, rows, ROW_NUMBER () OVER (PARTITION BY object_id, index_id, partition_number. ALTER INDEX ALL ON Adventureworks. In this article. The. REORGANIZES works by moving pages around, one at time. Provide the appropriate name of the maintenance plan. On the SQL Server Maintenance Plan Wizard page, select Next. This has a benefit. We will use 3 statements in order to show the blocking: ALTER INDEX. We will use 3 statements in order to show the blocking: ALTER INDEX. 11. However, none of the other metrics appear to indicate that the system is. Under Select a page, select Options. The issue is that doing this manually is very tedious as we have 75+ tables, also I noticed the indexes seem to get fragmented very quickly. Last night I killed the REORG on the clustered index after almost 6 hours of execution. 8. A nonclustered columnstore index. #4156024. Find and remove unused indexes – everything that is unused doesn’t do anything good. Reorganizing an index uses minimal system resources and is an online operation. 000 rows. Starting with SQL 2005 master keeps very little info regarding server configs and logins. Also, it is possible to do it with the help of SSMS (SQL Server Management Studio): Choose the database and then the table where you want to Reorganize and. The best practice recommendation is to reorganize your index if you have 5-30% of fragmentation, and only rebuild it if it has more than 30% fragmentation. They are also configured from SSMS. Since we are asking SQL Server to rebuild the clustered index on a quite large table twice, it will take a few. 1 Answer. FullTextIndexOptimize. 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. 3. Total records at that time were 879 & after short time fragmentation went up to. This will obviously alleviate both internal and external fragmentation but is a more heavy weight operation and by default causes the index to go offline, although it can be performed as an online operation, depending on your SQL. less than 10% logical fragmentation, don’t. object_id =. Depending on the fragmentation level, you need to rebuild or reorganize the indexes. Therefore, it'll appear as if there is still fragmentation remaining, as the housing extent will contain pages from multiple indexes. And also, avg_fragmentation_in_percent value says percentage of logical fragmentation (This is. Give it a go with its fully functional 30-day free trial. Bug in Rebuild on SQL Server 2016 and above? 6. If you are reindexing lots of large tables, the changes are still going to be logged and the log. Do not use REORGANIZE. Merging the full-text index fragments can improve performance and free up disk and memory resources. 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. indexes. dm_tran_database_transactions DMV:This offline index rebuild could be done at the table or the partition level. As a general (widely accepted) rule of thumb is . When you reorganize an index, SQL Server physically reorders the leaf-level pages to match the logical order of the leaf nodes. 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. Add a comment. SQL Server also supports nonclustered columnstore indexes. Reorganizing an index uses minimal system resources. It should be: TRUNCATE; Insert ; ALTER INDEX REBUILD; It might stil be slow, but at least you get sharp indexes. line is helpful to give the user some indication of what indexes it is rebuilding and how far it has progressed. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. 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.