sql reorganize index. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Convert a rowstore table to a clustered columnstore index, or create a nonclustered columnstore index. sql reorganize index

 
 Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Convert a rowstore table to a clustered columnstore index, or create a nonclustered columnstore indexsql reorganize index  Regular index maintenance and statistics updates are crucial, that much is certain

Rebuild the Indexes if the Fragmentation level is > 30%. If an index is between 10% and 30% fragmented, I will REORGANIZE the index and UPDATE the statistics. It drops index entirely and creates it from scratch. In order to resolve the index reorganization issue, we will enable the row and page level locking by altering the index as shown below: USE MSSQLTipsDemo GO ALTER INDEX [PK_Product] ON [Production]. Index rebuilding and reorganizing are the two methods to maintain indexes and improve database performance. SQL Server 2017 includes a new system view sys. Follow. Script and result below: ALTER INDEX ALL ON Fragmented REORGANIZE GO1 Answer. This caused the system to reorganize or rebuild some indexes even. 3. Depending on the type of index and the Database Engine version, a rebuild operation can be done offline or online. If the index’s design doesn’t allow for that, IndexOptimize will try to rebuild the index online. For more information, see the article: Gathering SQL Server indexes statistics and usage information. Yup, that is one perfectly valid way. 2. The nonclustered B-tree index is updated as changes occur to the columnstore index. Script to Manage SQL Server Rebuilds and Reorganize for Index Fragmentation. -- for SQL Server 2008 and up SELECT OBJECT_NAME([table_id]) AS TableName, COUNT([fragment_id]) AS Fragments FROM sys. To correct index fragmentation, you can reorganize an index or rebuild an. dm_db_index_physical_stats fincation have index_id which display heap and index informatiob. Select Allow online DML processing, and then select True from the list. For example, one of the indexes with a page_count of 967 has a fragmentation percentage. Mar 8, 2021, 2:47 PM. Here's another script to add to the list. Thank you all for your suggestions. 4. As part of query execution, the Full-Text Engine might receive input from the thesaurus and stoplist. A spatial index can be created using the following syntax: CREATE TABLE MySpatialTable (id int primary key, geometry_col. Index Reorganize During Database Full Backup. Reorganizing only works on the leaf pages. Index should be reorganized when index fragmentation is between 10% to 40%. Specifies the table to reorganize. For general guidance regarding index fragmentation, when fragmentation is between 5% and 30%, reorganize the index. 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. The performance of large WSUS deployments will degrade over time if the WSUS database isn't maintained properly. DROP INDEX when you are dropping a nonclustered index. Maybe I should explain. This tool provides index analysis to manage index defragmentation, including rebuild and reorganize fragmented indexes . This manual operation two-step. The following index operations require no additional disk space: ALTER INDEX REORGANIZE; however, log space is required. Here are a couple of examples. 2 contributors. – As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. Expand the Indexes. line is helpful to give the user some indication of what indexes it is rebuilding and how far it has progressed. 1. These will only generate transaction log when index pages are compacted and reorganized – so for less heavily fragmented indexes. You have to do some research and tailoring of how and when to do it based on your environment, though. Large object data is data with the image, text, ntext, varchar (max), nvarchar (max), varbinary (max), or xml data type. Lock durations are short and will cause minimal blocking of queries. The “Reorganize” index option is more facilitated than the “Rebuilt” index. _in_percent > 50 AND ss. If the index you wish to reorganize is not listed in the “Indexes to be reorganized” section, ensure that it has been added to this section and then click the “OK” button. Is this possible to do? In earlier versions of Microsoft SQL Server it could cause system slowdown to reorganize or rebuild a large index. This is quite a big problem in SQL Server, as your indexes will fragment over time. #1637994. The default value for this parameter will be ‘CATALOG’. One of the major reasons I wrote DBCC INDEXDEFRAG for SQL Server 2000 was as an online alternative to DBCC DBREINDEX. This job needs to be scheduled and ran on a weekly basis due to large data load. For now, I have just turned off the weekly index reorganize task which is not really a good long term solution. Quote from "Microsoft SQL Server 2000 Index Defragmentation Best Practices": "Fragmentation affects disk I/O. In this article. The. Rebuilding an index means that a whole new set of pages is allocated for it. However, reorganizing can be a "more online" operation and is sometimes preferred, even for. before i answer your question is the database on simple recovery. The query causing the block is in the format: ALTER INDEX [indexName] ON tableName REORGANIZE. Identifies indexes that are fragmented and defragments them. failed with the following error: "The index "SpatialIndex-20180705-165942" on table "extended_index_113435478_384000" cannot be reorganized because page level locking is disabled. Article. After executing the index defragmentation maintenance plan, we can check the status of the maintenance plan by checking the status of the SQL Agent job that is used to execute the maintenance plan tasks. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. It is used when the operation takes a. One time job to reorganize the indexes One time job to rebuild the indexes Scheduling ongoing reorganization job SQL databases, similar to the file system on a disk, will fragment over time. Product REBUILD GO Index Reorganize : This process physically reorganizes the leaf nodes of the index. sql file. 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. If you don’t spend much time with SQL Server and you. Reorganize or rebuild an index SQL Server Management Studio. Note: You can select “Reorganize All” to reorganize all the indexes in the table If the index you wish to reorganize is not listed in the “Indexes to be reorganized” section, ensure that it has been added to this section and then click the “OK” button. Product REBUILD. The answer is: it depends. Right-click the table on which you want to specify an index's fill factor and select Design. Index rebuilding process uses more CPU and it locks the database resources. It reorgs indexes when fragmentation is below 30% else it rebuild 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). And also seen fragmentation for most of the tables in it hence initially created a reorganize index maintenance plan and executed but it is being run for the last two days. If you truly want to REBUILD, and you want to do it for ALL indexes on a given table, then the command would be (straight from the official docs that npe pointed you at): For more instructions see the official docs. This procedure automatically chooses whether to rebuild or reorganize an index according to its fragmentation level, amongst other parameters, and update statistics. avg_page_space_used_in_percent column in the sys. Starting from SQL Server 2016, new options were added to the index maintenance tasks that allow us to perform the Rebuild Index and Reorganize Index tasks, based on the fragmentation percentage of the index, and other useful options to control the index maintenance process. USE AdventureWorks; GO ALTER INDEX ALL ON Production. It doesn’t work on the intermediate pages between the root and the leaf. Script to reorganize all indexes on all tables in user databases. However I want advice whether it is required to setup the SQL Server Index and Statistics Maintenance scripts, because my SQL server is running on a SAN infrastructure and I have read that there is no benefit to setting fill-factor to less than 100%, or to perform index. You can use sys. The documentation is also indicating that: Online index operations are not available in every SQL Server edition. This method can help when. Bulk amount records are deleted and updated frequently. Which is the best method to reorganize sql server database. [Test] REBUILD WITH (ONLINE = ON); Additionally, I would only rebuild indexes which require it. 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. SQL Server 2012 (11. SQL: Procedure for rebuild and reorganize indexes like Microsoft says. I used the sp_who2 procedure to see which queries were waiting, and which other query they were blocked by. For a dedicated SQL pool table with an ordered CCI, ALTER INDEX REBUILD will re-sort the data using tempdb. 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. However, the meaning of those operations is different in the case of Columnstore. I'm just using the reorg index task that is in the maintenance plan designer GUI. In the Rebuild Indexes dialog box, verify that the correct index is in the Indexes to be rebuilt grid and click OK. Maintenance. Then, drag and drop Rebuild Index Task into the maintenance plan designer. But if you need to change something about an index (that. If the index creation is interrupted, the index isn't re-created. These options define how much. That means that it sometime has to contend with blocking because it's sharing the same pages that. The reason we want to load. Yup, that is one perfectly valid way. 000. Reorganizing an index only deals with the fragmentation that exists, and the more fragmentation there is, the longer a reorganize will take. That's why as a rule of thumb, for fragmentation greater than about 30%. Use solutions such as Adaptive Index Defrag to automatically manage index defragmentation and statistics updates for one or more databases. The possibility to. x), you can create nonclustered B-tree or rowstore indexes as secondary indexes on a clustered columnstore index. 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. 7. Start SSMS and connect to the SQL Server database engine. If the index’s design doesn’t allow for that, IndexOptimize will try to rebuild the index online. Rebuild and Reorganize Index using SQL Server Management Studio (SSMS) Find and expand the table in Object Explorer >> Open Indexes >> Right-click on the target index >> Rebuild or Reorganize. For more information, see Data Types (Transact-SQL). To reorganize index SQL Server, right-click it & choose Reorganize. The documentation for alter index, for example, shows that it accepts an index_name, not an expression that might evaluate to an index name. Your disk drive space is for files, not for ornamentation. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. The select statement is blocking on the clustered index (object id 446624634) whereas the object_name() is blocking on the table (object id 462624691). The length of time the rebuild takes is related to the size of the index, not the amount of fragmentation in it. 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. 3番目のパラメータは、Non ClusteredインデックスID(sys. GO. Someone else set it up. Specify the name of the maintenance plan. The Index Reorganize operation physically reorders leaf level pages of the index to match the logical order of the leaf nodes. Mohamad Mahmoud Darwish. Also trying to avoid logging to transaction log and log. 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. Here is the image for additional clarity. For example, LDAPDB2. Plan B is fine. ;WITH cte AS ( SELECT object_id, index_id, partition_number, rows, ROW_NUMBER () OVER (PARTITION BY object_id, index_id, partition_number. It is recommended to use an integer data type in the index. Right-click on the index and select Rebuild. g. To work around this, try the following methods: Method 1 ( recommended ): Limit the number of full-text indexes in the same catalog. These pages can get empty space on them and become out of order over time as well. the year and month columns. How Fragmentation Hurts SQL Server Performance. we are using Ola index job to rebuild and reorganize the index. 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. An index rebuild will always build a new index, even if there’s no fragmentation. For a reorganize they are not, but just because a reorganize happened does not necessarily mean that a stats update is necessary. Use a columnstore index to efficiently run real-time operational analytics on an. For now, I have just turned off the weekly index reorganize task which is not really a good long term solution. Click the plus sign to expand the Tables folder. This is a best practice for performance when you rebuild or reorganize indexes. Create a execute sql task and schedule it through sql agent . 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. FullTextIndexOptimize. When you reorganize an index, SQL Server physically reorders the leaf-level pages to match the logical order of the leaf nodes. We need to set these parameters for the job IndexOptimize - USER_DATABASES: @UpdateStatistics = 'ALL'. Reorg the Indexes if the Fragmentation level is > 5% and <30%. 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. ) Reorganize = fragmentation level is between 5% and 30%. Additionally, after reorganizing indexes it is reasonable to update the statistics as this operation does not update the statistics like the index rebuild operation. Clustered Columnstore Indexes, as well as “regular” indexes, support the Rebuild and Reorganize operations. Feedback. Improve this answer. – Ed B. In the infrequent cases where you do need to reorganize or re-build index, consider these: Run index maintenance during off peak period. INDEX_REORGANIZE Reorganizes the index. Right-click Maintenance Plan and select Execute. In an MS-SQL Server. Under the very wrong assumption that it wouldn't take long, I've ran ALTER INDEX ALL ON OUR_BIGGEST_TABLE REORGANIZE;. You could also refer another query which may be helpful to you. From cruel experience, I know that I can repopulate that table from scratch (i. For example, the heaviest index (clustered index and also pk) is running reorg for around 4 hours 30 min even do the index was. REORGANZE index - is for reducing fragmentation without index rebuild, so no drop and create. 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. IndexOptimize is the SQL Server Maintenance Solution’s stored procedure for rebuilding and reorganizing indexes and updating statistics. 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. REORGANIZE. So let’s take one thing at a time. 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. Well, I’d wager some of it is backwards compatibility. This prevents modifications to the table. 2. FOR VALUE. From SQL Server 2012 Enteprise and later there is not such restriction. dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL, NULL) indexstats INNER JOIN sys. It shouldn't be used on. Use ALTER INDEX REORGANIZE, the replacement for DBCC INDEXDEFRAG, to reorder the leaf level pages of the index in a logical order. There are two main ways to defragment a Heap Table: Create a Clustered Index and then drop it. SET @BackupDirectory = N'C:Backup' -- <== Change this to your backup directory. index_resumable_operations to monitor and check the current execution status for resumable index rebuilds. There are some good reasons to Rebuild an index, like updating statistics. 5) Perform full database backup. I figured, the reason was because of the page_count, which was lower than 1000 for each of the indexes that were still very fragmented. Provide a name for your maintenance plan and click Next to choose the tasks we want to include in our maintenance plan. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Poorly designed indexes and a lack of indexes are primary sources of database application bottlenecks. 1) Since its indexes are not reorganized before. Expand the Tables folder. If you what you are saying is true, even reorganizing the indexes that have never been, may cause a larger impact on the server as well. The first and most popular method is to rebuild indexes. August 1, 2013 at 3:52 pm. x), REORGANIZE is only used to compress CLOSED rowgroups into the columnstore. –In this article. The index front is stable, no change. You can do maintenance in phases, where each maintenance phase covers a subset of. We recently switched to Ola Hallengren's maintenance script and automated the deployment of MaintenanceSolution. Stack Exchange Network. Maintain Index and Column StatisticsAs people have mentioned here, your indexes do not automatically rebuild. It is also recommended to read the previous article of this series - Rebuild Index Task before reading this one. You can also change this threshold via parameters. SQL Server 2005 Index Rebuild/Reorganize. the. 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. x) および SQL Server 2014 (12. The performance benefit may not be noticeable for indexes that are used primarily for seek operations. 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. From all the research I've done, I can't really find any indication of why you would want page fullness to be low, and am anticipating that I'll want to do an index reorganize operation to set the value to. REORG INDEXES/INDEXES command reorganizes indexes. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) Convert a rowstore table to a clustered columnstore index, or create a nonclustered columnstore index. There are two options to fix fragmentation. Note In SQL Server 2012 (11. Create a job to run your index reorganize ('Reorganize'). 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. Values: - 0: The script will reorganize or rebuild the fragmented indexes. Fragmentation causes issues where it takes SQL Server more time to traverse the index tree to find the necessary records. Reorganize and Rebuild Indexes; SQL Server 2005 Index Best Practices; Fixing Index Fragmentation in SQL Server 2005 and SQL Server 2008; Sample Table for SQL Server Index Performance Testing. dm_db_index_physical_stats) is <1000 you don't need to rebuild or reorganize such. Creating a SQL Server Maintenance Plan. Over here it will display all the indexes of the table and you can just click OK. The first item is "Reorganize data and index pages". Rebuild or Reorganize SQL Index. 2. 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. The execute sql task should contain the index rebuild code along with stats rebuild . I don't think Windows SQL Server Maintenance has this option yet. If not specified otherwise, the procedure uses the fill factor that is already set for each index. On the Standard bar, select New Query. Locking. If you don’t spend much time with SQL Server and you. Index Rebuild vs Index Reorganize. In SQL Server, when rebuilding an index which previously had statistics updated with PERSIST_SAMPLE_PERCENT, the persisted sample percent is reset back to default. 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. Depending on INSERT, UPDATE and DELETE activity against your tables, your physical data can become very fragmented. After month the same query took up to 20-30 s. The equivalent statistics update can be achieved by: UPDATE STATISTICS . 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. As of this writing, our super smart SQL Architect and Performance Expert (Jeff Schwartz) is working on some testing to see if there is any measurable overhead to all the misleading out-of-space messages generated during index REORGANIZE maintenance. 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. index_type_desc AS IndexType, indexstats. In the SQL Management Studio Console, expand Management > Right Click Maintenance Plan and select Maintenance Plan Wizard. The process uses the existing pages only and does not allocate new ones, but it does compact the index pages. For information about how to maintenance index, refer to MS document. Navigate to Tasks / Shrink / Database. regarding reorganize - there is an exception to this - if you have columnstore indexes that are frequently subject to deletions or that are subject on inserts in small batches then running reorg. There is all reason to only rebuild index that are fragmented, and a good maintenance. Fragmentation. 0 to SQL Server 2016 there is no feature to rebuild index automatically. December 3, 2010 at 12:21 pm. Depending on the fragmentation level, you need to rebuild or reorganize the indexes. or to reorganize use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__. 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. Disk space is an important consideration when you create, rebuild, or drop indexes. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. In SQL Server, you "might" run into issues with "updating primary key". Defining "Index Stats Options" as well has become available in SSMS. You also can create a linked server to SQLAZURE and create a sql agent job. Sorted by: 2. 1. Here is a simple query to check fragmentation on your existing indexes:1 Answer. The entire index has to be read to. Let us create a Heap Table and insert some records in it and then check the fragmentation. All they do is waste space and resources. Many people (and even solutions) in the SQL Server community say you need to look at Index Fragmentation levels (e. before i answer your question is the database on simple recovery. When rebuilding your indexes, be sure that you allocate enough memory to the session that rebuilds your index. Defragmentation in Practice. All you might notice is a drop in performance executing queries while the indexes are gone but dropping and creating a (none-clustered) index has no impact whatsoever on the actual data stored in your tables (Creating a clustered index impacts the physical ordering of your data but again, no data. On the right panel, right-click SQL Server Agent. Designing efficient indexes is paramount to achieving good database and. Then, choose New, Job to create a SQL agent job. In SQL Server, the ALTER INDEX statement is used to modify an existing index. -- Rebuild or reorganize indexes based on their fragmentation levels DECLARE @work_to_do TABLE ( objectid int , indexid int , pagedensity float , fragmentation float , numrows int ) DECLARE @objectid. The REORGANIZE modifier for ALTER INDEX is not currently supported by Azure SQL. 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. The sys. OBJECT_ID) AS TableName, ind. One of the biggest performance hits that you will see on your databases, next to not having indexes, is indexes that are very fragmented. The table can be in a local or a remote database. Also, some tables/indexes will hardly be fragmented. Instead of our phone book having 1,000 pages that are 100% full, we might have 1100 pages that are only 90% full. Unlike DBCC INDEXDEFRAG, or ALTER INDEX with the REORGANIZE option, DBCC DBREINDEX is an offline operation. Does database on which tables reside have database owner. 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. Reorganizing an Index should be done when you have elevated amounts of white space within your index (i. I suggest 50% for REORGANIZE, 80% or even 90% for REBUILD. This requires the DBA to create such a maintenance job. For a table with an ordered clustered columnstore index, ALTER. indexes ind ON ind. However, you can create a staging table insert all rows into that, drop original table and rename staging table to original. SQL Server index fragmentation is unavoidable, but you can minimize the negative effects of fragmentation on database performance. 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. I also removed the the second part of the case statement that uses REORGANIZE. The Full-Text Engine compiles and executes full-text queries. Your new index will have the size non less than the size of disabled index. An index rebuild will always build a new index, even if there’s no fragmentation. do nothing; reorganize an index; rebuild an index; Don't reinvent the wheel - just go see and use the script!Effective database performance tuning often relies on having precise database insights to determine actual root causes. Index Rebuild vs Index Reorganize. If the tables get more than 15% fragmented, performance is very negatively affected. To add to this, you need to learn your system and how it's used. The following options are available on this page. is_ms_shipped = 0 --Excludes any objects created as a part of SQL Server installation AND ss. The Query Optimizer. dm_db_index_physical_stats function is the preferred tool to use to check index fragmentation on any CA or DA database table. Designing efficient indexes is paramount to achieving good database and application performance. 3. The import process should be reworked to bulk-load one table at a time. 2. 3,895 9 51 78. SELECT OBJECT_NAME(ind. The index can be rebuilt using ALTER INDEX REBUILD T-SQL command. REORGANIZE INDEX blocks other queries. We check the time for sample select query - it was 2s just after index creation. Thank you, ShamAnswers. This topic provides. SELECT a. In the infrequent cases where you do need to reorganize or re-build index, consider these: Run index maintenance during off peak period. 4) Move database back to full recovery mode. Everything is the same - configuration, CPU, RAM, disk drive layout, similar (but not the same) database with similar data and workload. It also enables faster growth in the future. Someone else set it up. I know the sql to perform this action on all indexes in a table is. FileID, a. T-SQL Alter Index. We will use 3 statements in order to show the blocking: ALTER INDEX. Setup a new job to run update stats via IndexOptimize daily. Rebuild if > 30%. 3) Reorganize indexes. Now. x) and SQL Server 2014 (12. You can apply a new fillfactor when you rebuild an index. ”. SELECT total_execution_time, percent_complete, name,state_desc,last_pause_time,page_count FROM sys. The Reorganize Index task also includes an option to compact large object data. Change it to be weekly or even less frequently. You can reorganize all indexes that are defined on a table by rebuilding the index data into unfragmented, physically contiguous pages. . Therefore, you do not need to update statistics after performing ALTER INDEX REBUILD, DBCC DBREINDEX, DBCC INDEXDEFRAG, or ALTER INDEX REORGANIZE operations. Change it to be weekly or even less frequently. 11. deteriorating. or to reorganize use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__ REORGANIZE. Tablename rebuild with (online=on) on. In this article, we will go through these 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. It is causing other queries to wait, even simple ones like: SELECT * FROM tableName WHERE indexedColumn = @value. SQL Server internally does not keeps in any system table the fragmentation value so how it is going to decide what criteria to select when.