Leverage solutions such as Adaptive Index Defrag to automatically manage index defragmentation and statistics updates for one or more databases. You need free space in the db of table_size x 1. [index_id] , idx. December 8, 2009. Run this command: 1. This internal fragmentation occurs when inside the. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. This article shows an example of how to manually perform defragmentation on an index using SQL Management Studio. dm_db_index_physical_stats there you can detect fragmentation in a specific index, all indexes on a table or indexed view, all indexes in a database, or all indexes in all databases. To improve the clustering of pages, rebuild the index. Auto shrink is a database option that is used to conserve disk space. Contact the manufacturer of the defragmentation tool to learn how files are locked and how this could affect SQL Server concurrency. The name of the index. April 29, 2010. This is because the doc set was reorganized for the SQL Server 2012 release, and not all topics/categories made it. Contig can defragment SQL Server database and log files while the databases are online, but there is some performance cost (whether or not the performance hit will be a problem depends on the particular system). This generates a fragmentation of this clustered index of more than 99% (with default Fill factor). @tblName specifies if you only want to defrag indexes for a specific table. To enable the Database Rebuild Index, we could go through this path: Site > Site Maintenance > Edit the Maintenance task. According to. While you are at it, by all means, use. Create a execute sql task and schedule it through sql agent . You can use Ola's Index maintenance solution or Michelle Ufford's - Index Defrag Script. 8. The following query ran for ten minutes on version 2008. Leverage solutions such as Adaptive Index Defrag to automatically manage index defragmentation and statistics updates for one or more databases. 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. But only if the index is bigger than a small-thing (I forget exactly, but some really small tables appeared frag'd immediatly after reindex), and is more than 20% fragmentated. If only table_id is specified or if index_id is 0, the data pages of the specified table are scanned. SP_BlitzCache can help with finding your worst performing queries. In SQL 2005, you can query DMV sys. [avg_fragmentation_in_percent] FROM sys. Rebuild if > 30%. One other item. Columnstore Online Index Rebuilds – Columnstore indexes need more attention to maintenance. For more information, see ALTER DATABASE (Transact-SQL). ALTER DATABASE [Inter3112] SET OFFLINE GO. After Defragmentation - Once the Azure non-clustered index has been. g. This article shows an example of how to manually perform defragmentation on an index using SQL Management Studio. Only files marked by the system as "not moveable" can't be defragmented. Let’s use DBCC SHRINKDATABASE to reclaim the empty space. With the SQL performance analyzer in DPA, DBAs can check SQL index fragmentation on the server and get pinpointed advice about wait times, SQL statements, and the actual workload—across the past five seconds or five years—they. Automatic index and statistics management. For database optimization, we recommend using an index and statistics maintenance script. Columnstore Online Index Rebuilds – Columnstore indexes need more attention to maintenance. [name] as 'Table', dbindexes. When you dig down through my computer to the properties for the drives, and hit the "defragment" button on. The maintenance plan. Basically, do the minimum commensurate with your fragmentation levels. Open-file defragmenting affects performance. [name] as 'Schema', dbtables. {"payload":{"allShortcutsEnabled":false,"fileTree":{"AdaptiveIndexDefrag":{"items":[{"name":"CHANGELOG. Note that the time limit is checked BEFORE an index defrag begins, thus a long index defrag can exceed the time limit. Use the Rebuild Index Task dialog to re-create the indexes on the tables in the database with a new fill factor. Aug 26, 2015 at 15:42. Heaptest default values go 50 select index_type_desc,avg_fragmentation. 0. DBCC INDEXDEFRAG also compacts the pages of an. Here I use 4 conditions : 1. 2. Until yesterday, we always limited the WHERE-clause: where date > '20180101'. The index fragmentation is the index performance value in percentage, which can be fetched by SQL Server DMV. create table dbo. Only files marked by the system as "not moveable" can't be defragmented. is_ms_shipped = 0 --Excludes any objects created as a part of SQL Server installation AND ss. The other thing you can do, for when you do need to defragment indexes (if for example you have deleted a large amount of data), is using SQL Server's Service Broker to set up the maintenance plan for multiple tables in a batch. For more, read my post: Stop Worrying About Index Fragmentation. object_id) AS schema_name, OBJECT_NAME(ips. If you have a clustered index on the table the fastest way to defragmanet your table would be to drop and recreate the clustered index. Your primary concern is getting your SQL Server back online. . No matter how many times I run the script to defrag these records, I still have the same indexes to be defraged and most of them with the same. A non-clustered index is the other main type of index used in SQL Server. If you have fragmentation, you need to REBUILD or REORGANIZE. Your best assistant here is our SQL Defrag feature, seamlessly integrated with dbForge Studio for SQL Server . This job needs to be scheduled and ran on a weekly basis due to large data load. Make sure to thick the Enabled checkbox. Now SQL have 4 threads to the database and not one. This can be checked using:. SQL Server allows the creation of multiple indexes for rapid data search and access operations in the. I'd consider doing a LOB_COMPACTION less frequently but both options comes down to your maintenance windows duration pretty much. Database size was ~66GB. 59. But it is not recommended. 2. x) Service Pack 2, executing DBCC CHECKDB clears the plan cache. 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. The "index optimize" job created by Ola's install script focuses on defragmentation, not statistics update. This script has been tested and will work with SQL Server 2005, SQL Server 2008, SQL Server 2008R2, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017 and SQL Server 2019. Review Using SQL Server DMVs to Identify Missing Indexes tip. Select Steps, and then select New to add an execution step. alter index ci on t_ci reorganize -- measure the fragementation select avg_fragmentation_in_percent, avg_fragment_size_in_pages, fragment_count, avg_page_space_used_in_percentAWS Improving database optimization doc article provides information about Rebuild Indexes and Update Statistics. There are several options that allow you to specify the level of. We have several databases in which a large number of tables are created and dropped. This procedure automatically chooses whether to rebuild or reorganize an index according to its fragmentation level, amongst other parameters, and update. 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. This article serves as a guide as to how to automate and schedule SQL Server index defragmentation, and covers three different ways of doing it. 2. To defragment indexes, SQL Server 2000 provides several statements. Indexes play a critical role in SQL Server query performance. [Product_B] VALUES (default,'Test') GO 100000. Paul’s answer to the question was very practical and dealt with the wasted space utilization that excessive index fragmentation can cause in a database that uses a uniqueidentifier column with newid () as the primary key, and given the cost per gigabyte for SSD storage this could be quite significant. Click OK. Prioritize defragmentation by fragmentation level, scan density, and index size. Create a clustered index and move it away from the heap. 3. SELECT CASE WHEN indexstats. Lock durations are short and will cause minimal blocking of queries. I have a question about index maintenance. In this article. For this example, the defragmentation reduces the size of the index by more than 3x (from 25 pages to 7 pages) and the table consumes just over 50% less space. Find and remove unused indexes – everything that is unused doesn’t do anything good. The data of partitioned tables and indexes is divided into units that may be spread across more than one filegroup in a database or stored in a. If you are experiencing slow full-text query performance, you can use sys. Delete the other 7 files. DBREINDEX = REBUILD option "Rebuilding Indexes". indexes. DM_DB_INDEX_PHYSICAL_STATS DMV displays fragmentation information for the data and indexes of the specified object. I have a mssql database, we'll call it: mssqlDB01. Applies to: SQL Server 2022. Yes it will - but only to a certain degree. A new window. SQL Server Index Defragmentation. Any indexes above 50% in fragmentation percentages that affect more than 4000 rows are bad, and the system performance can significantly benefit from defragmenting the indexes. Note that PostgreSQL uses the term "clustered index" to use something vaguely similar and yet very different to SQL Server. set @current_sql = (select top 1 Reorganize_SQL from @fragmented_indexes) execute sp_executesql @current_sql--select. This is called fragmentation. 9. If you want to defragment a heap in SQL Server 2005, you have three options: 1) create a clustered index on the heap, then drop the clustered index;Many of my clients to defrag their hard drives; some however do not. December 16, 2013 10:03 am. Coworker started REBUILD on both tables. SQL Server index fragmentation is unavoidable, but you can minimize the negative effects of fragmentation on database performance. Usage involves setting the following five parameters (technically, variables) at the top of the script: @DATABASE_NAME: set to whatever database you want to check for fragmented indexes. ApexSQL Defrag tool is a 3 rd party SQL index defragmentation tool that you can easily use to perform number of operations related to the SQL Server indexes. For those unfamiliar with this object, it defragments indexes in SQL Server 2005 using the ALTER INDEX command. 1 For a memory-optimized Nonclustered index, the full key is not required to perform an index seek. Monthly – 17% fragmented. SQL Server 2000 introduces a new DBCC INDEXDEFRAG statement to defragment clustered and nonclustered indexes on tables and views. Starting with SQL Server 2005 the recommended way (required starting in SQL Server Kilimanjaro) to defragment indexes is by using the ALTER INDEX statement with the. If you are seeing this behavior, then its better to use ( MAXDOP 1) ( serial index rebuild) at query level when. Note that the time limit is checked BEFORE an index defrag begins, thus a long index defrag can exceed the time limit. In enterpise edition of SQL server you can also rebuild index online (which is better than index defrag for performance) Yes. Contact the manufacturer of the defragmentation tool to learn how files are locked and how this could. It is very common to see big increase in performance after optimizing your SQL indexes. So now, we have identified all the fragmented indexes, how to defrag them? That is our next blog 😊. Those rebuilds have been causing some locking pressure on one of our apps and I am looking at the possibility of scaling the rebuilds. In this case Reorganize option is selected:Databases with no index defragmentation were an average of 5% fragmented. Fragmentation of your SQL Server’s internal allocations. This setting is known as the fill factor. Ignore: Fragmentation levels of 10 percent or less should not pose a performance problem, so you don’t need to do anything. Just a reminder that index reorganize is always online (all indexes are available during defrag) and index rebuild can be made also online (WITH (ONLINE=ON) as long as the index does not contain BLOB columns. It shrinks the size of a database file, either to a specific size or as small as it can. It automates the time-consuming process of finding fragmented indexes based on policies for the targeted databases. 1. Yes, this is due to low page count. IndexOptimize uses the SQL Server ALTER INDEX command: REBUILD WITH (ONLINE = ON) to rebuild indexes online, REBUILD WITH (ONLINE = OFF) to rebuild indexes offline, and REORGANIZE to reorganize indexes. Select the Compact large object column data checkbox to specify that all pages that contain large object (LOB) data are also compacted. Often, this is not enough to perform index. Trigger defragmentation of database indexes by fragmentation percentage and scan density. The datafile. The link points to SQL Server 2014 docs, but the syntax should work on 2005 and 2008 as well. Defragmentation utilities may lock sections of the file, preventing SQL Server from completing a read or write operation. The scripts has some cool features like. Reorganize index and level of defragmentation. Share. A. Share This: As the data in the database tables of Microsoft SQL Server changes, their indexes change. Reorganizing an index only deals with the fragmentation that exists, and the more fragmentation there is, the longer a reorganize will take. You have the options in the Plan for shrinking the database and defragging existing indexes. Collection of solution center articles on SQL index defragmentation topic. Use DBCC INDEXDEFRAG to defragment an index. index_id as [SI. Sorted by: 2. 1. From this tab, select a SQL Server instance in the server explorer on the left and choose database (s) as a target of index operation. This clause is equivalent to DBCC INDEXDEFRAG. For more information, see sys. The next thing to know about index recommendations has to do with the keys in the index. [object_id]) as [TableName] ,SI. dm_db_index_physical_stats function is the preferred tool to use to check index fragmentation on any CA or DA database table. Defaults to 480m (8h). Maintenance. Select * from sys. SQL Defrag Manager enables database teams to be more productive while eliminating one source of potential performance problems. It reorgs indexes when fragmentation is below 30% else it rebuild the index. Online vs offline SQL Server index rebuild in SQL Server. Although possibly related with a very small database as suggested in other response, the problem is more likely tied to the FILLFACTOR. But over a period of time, because of DML operations (inserts/deletes/updates), the data will get spread across the disc (Physical order of pages are NOT in sequence). Lock durations are short and will cause minimal blocking of queries. SELECT OBJECT_NAME (fq. logical fragmentation is just mismatch between Logical ordering of Index keys and physical. For a heap, the associated PFS and IAM pages are examined and the data pages of a heap are scanned in LIMITED mode. The general consensus is if fragmentation is: Less than 10% – there is no need to do anything to the index. So, how to identify the fragmentation of all indexes in a database? Here is the query. This can be checked using:. One of the biggest performance hits that you will see on your databases, next to not having indexes, is indexes that are very fragmented. That's why as a rule of thumb, for fragmentation greater than about 30%. Also, DBCC INDEXDEFRAG will not help if two indexes are interleaved on the disk because INDEXDEFRAG shuffles the pages in place. In older versions of SQL Sentry, this feature is disabled by default. dm_db_index_usage_stats WHERE database_id = DB_ID( 'YourDb') AND OBJECT_ID=OBJECT_ID('YourTable') select name as index_name, stats_date(. Note: You can select “Reorganize All” to reorganize all the indexes in the table. Within sql not only is there file fragmentation, but also fragmentation on the underlying objects, tables and indexes. The SAMPLED mode returns statistics based on a 1 percent sample of all the pages in the index or heap. DBCC INDEXDEFRAG can defragment clustered and nonclustered indexes on tables and views. alloc_unit_type_desc FROM sys. However, the defragmentation is performed as a series of short transactions, so a large log is unnecessary if log backups are taken frequently or if the recovery model setting is. It’s like a looking at the results of a developer writing SQL after three Red Bulls – it doesn’t make any sense, and you just want to wad it up and throw it away. 31 and later, this feature is enabled by default for all targets. Daily – 6% fragmented. Then you can do an alter index with the rebuild clause whenever your threshold is reached. Rebuild if > 30%. Greater than 30% – rebuilding the index with the REBUILD option is probably the best option. That can be found using the STATS_DATE function. , Indexes: "timezone_description_pkey" PRIMARY KEY, btree. The reason why too many page splits can decrease the performance of SQL Server is because of the large number of I/O operations. Thanks for the info on Showcontig and Index Defragmentation. Everything worked fine. Index fragmentation at a filesystem level really only hurts two things, the first of those is read-ahead which. That article is in-depth and difficult to summarise in this reply, but it comes down to creating an asynchronous. SQL Server Internal Fragmentation SQL Server Internal Fragmentation is caused by pages that have too much. At first glance, that would seem to indicate that your database got worse off if you defragmented! But like all good novels (and most bad ones), the plot thickens. lang. Two additional methods to defragment physical database and log files are backup/restore or detach-move-attach, and both require down-time. Open-file defragmenting affects performance. OBJECT_ID) AS TableName, fq. The general consensus is if fragmentation is: Less than 10% – there is no need to do anything to the index. The Server is running SQL Server 2017 (RTM-GDR) (KB4505224) - 14. As of version 2020. Added support for indexes with the ALLOW_PAGE_LOCKS option. REBUILD WITH (ONLINE=ON) some of them still remain fragmented. According to Microsoft guidelines, based upon index fragmentation percentage, we may choose to either REORGANIZE,. A starting point could be looking at the queries being executed on your server. This should not be a problem. index_type_desc AS IndexType, qs. NAME + '] ON [' + Object_name(ind. 0. 0. Also need to defragment the tables, since the allocations within. It’s like a looking at the results of a developer writing SQL after three Red Bulls – it doesn’t make any sense, and you just want to wad it up and throw it away. Clustered indexes try to organize the index such that only sequential reads will be required. Review Index Fragmentation Report in SQL Server 2005 and 2008 tip. ApexSQL Defrag can be easily used to connect to your SQL Server instance and analyze the index fragmentation percentage at the instance, database, or table levels. (When Tempdb is corrupted) as we ALL know that it gets recreated when a SQL Server restart is done, but Tempdb files are not deleted when you restart SQL Server and are also not 0. USE DatabaseName –Need to Specify the User Database Name. Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. It's a. T-SQL script. The database will be shrunk leaving it. Watch this video by List the Indexes. For the SQL Servers we manage for our. The first time you enable it, the Fragmentation ManagerWizard displays. Friday, August 26, 2016 2:15 PM. 9bn row table which has a varbinary (255) column which we use to store the HashBytes of an nvarchar (2000) field in the same table. e. In general no, the restore, at least in "modern" sql servers, is optimized to read and write data quickly. Index Rebuild vs Index Reorganize. 1. */Effective database performance tuning often relies on having precise database insights to determine actual root causes. Then we can use contig [Filename] as shown below to defragment. Resolution: Reorganize and rebuild indexes. Indexes with small number of pages (<1000) will usually. Rob Sheldon tackles the subject of Index Defragmentation in SQL Server 2005 and 2008, using the sys. There are three options to remove fragmentation in heaps: Create a clustered index and drop it once it is completed. Right-click on the index and select Rebuild. Also even though SQL allocates in 8K blocks having to move the disk head all over the place leads to much slower access times. With spinning disks, this can be bad. Let it autogrow with at least 200 MB at the time. I would highly recommend using a tool specific to sql server to defragment the drive(s) on which the files sit. You can use SQL Server Management Studio (SSMS) or T-SQL to get started managing index fragmentation. Bad internal fragmentation (having lots of free space on the pages) means the index is bigger than it needs to be. Let it autogrow with at least 200 MB at the time. For example, one of the indexes with a page_count of 967 has a fragmentation percentage. Let the internal health rule which takes care of index fragmentation run. The index fragmentation is the index performance value in percentage, which can be fetched by SQL Server DMV. This is done by reorganizing or rebuilding an index on an entire index or a single partition. @dbScope specifies a database name to defrag. In fact, once you start focusing on defragmentation at the SQL Server level – whether with manual defragmentation or with the automated defragmentation provided with SQL Defrag Manager, you may decide Database Index Defragmentation Tool for SQL Server. According to the index performance value, users can take the indexes in maintenance by revising the fragmentation percentage with the help of Rebuild or Reorganize operation. 2 Answers. indexes AS [idx] ON [ips]. We also checked the indexes of the tables that are accessed sequentially on process overview. DON’T: Insert records with random key values. Starting Price: $1,196 per. We need to identify all the indexes that are fragmented and defrag them to achieve better performance. Link: Microsoft SQL. The following example defragments all partitions of the PK_Product_ProductID index in the Production. The ALTER INDEX statement shown does not explicitly mention the FILLFACTOR, and hence the rebuilt is done on the basis of the current fillfactor value, leaving a fragmentation that should. To check for index fragmentation using SSMS, open Object Explorer and navigate to the index you want to check. MadhuQ1: There is no good way to check for all forms of fragmentation in either the data or the secondary indexes. Database size was ~66GB. Summary: SharePoint Server uses SQL Server to store most of the content for the Web site and configuration settings. dm_ db_ index_ physical_ stats (in 2005+). If only table_id is specified or if index_id is 0, the data pages of the specified table are scanned. When you dig down through my computer to the properties for the drives, and hit the "defragment" button on. This will block all queries to that table using the index till the index defrag is finished. These commands are great, but you really need to collect the information and then analyze the data to. This may affect the concurrency of the server that's running SQL Server. go. how to find out defragment index pages in sql server 2008 using script? 0. How Defragmentation Improves Performance. 0. 4. It has been proven that Online Index Rebuild – Can Cause Increased Fragmentation when it is allowed to run with MAX DOP > 1 and ALLOW_PAGE_LOCKS = OFF directives. Double Click on one of the SQL. ApexSQL Defrag is an enterprise SQL Server tool which is used for monitoring, analyzing and managing SQL Server index defragmentation which works down to a single index. Monitor tempdb during rebuild operations. Indexes were 75% fragmented. 1. This causes a lot of free space or, as you call it, fragmentation. You don't mention what tool you're using to defrag the disk, I supose it's the standard Disk Defragmenter. Perform logical consistency checks on indexes. 8. The disks defrag OK, and SQL is not harmed - this is the result that should be expected. The link points to SQL Server 2014 docs, but the syntax should work on 2005 and 2008 as well. The results for this command are up for comparison against the Alter Index Rebuild. No, there is no auto-magical defragging of indexes. For the SQL Servers we manage for our clients, we use. When we were listing the fragmanted indexes our scope was on the indexes that are used in expensive SQL Statements. It is compatible with all versions of SQL Server 2005 , 2008 , 2012 , 2014 and 2016. SQL Server 2005 Index Fragmentation. The only way to get rid of this fragmentation is to rebuild both the non-clustered index and the clustered index. SQL Server index. When we were listing the fragmanted indexes our scope was on the indexes that are used in expensive SQL Statements. " ALTER INDEX MyIndex ON MyTable REORGANIZEThe more keys and included columns, the bigger the indexes get and the longer SQL Server will hold locks to insert, update, and delete data. index_type_desc ,IPS. PS: The above script is for row-store indexes. Fragmented indexes will primarily slow down ‘search’ performance. txt","contentType. Not so much if the file is spread out all over the disk. It checks the SQL Server licences, if Enterprise it will rebuild the index online else it. In Update Statistics they mention one of the solutions:. @tblName specifies if you only want to defrag indexes for a. If an index contains less than 100 pages, I will perform no maintenance. If not specified, all non-system databases plus msdb and model will be defragmented. _in_percent > 50 AND ss. Expand the Tables folder. DBCC DBREINDEX('TableName') will rebuild the indexes on the table. ALL Specifies all indexes associated with the table or view regardless of the index type. Optimal. In older versions of SQL Sentry, this feature is disabled by default. To work around a very large index that won't defragment, the BEST solution is to pre-size a new database and move all your objects to that DB. This is called fragmentation. Hi @Boopathi Subramaniam , Thanks for posting in Microsoft Q&A forum. Now SQL have 4 threads to the database and not one. Even though it should be safe, I would not want to defrag disks in Production while SQL is running. go. Fairly easily, you can use my sp_RebuildIndexes procedures as a base and then change the code to DEFRAG instead of rebuild. The DBCC SHOWCONTIG statement traverses the page chain at the leaf level of the specified index when index_id is specified. At first glance, that would seem to indicate that your database got worse off if you defragmented! But like all good novels (and most bad ones), the plot thickens. [avg_fragmentation_in_percent] FROM sys. Paul pointed out a couple of other points. Based on the. 1. Sure, the database files are still in access by the running Sql Server service, but it is possible to defrag them and it takes effect. Review Deeper insight into unused indexes for SQL Server tip. This job needs to be scheduled and ran on a weekly basis due to. As administrators will know, identification of fragmentation and of the same are crucial elements in database . Features: Supports Microsoft SQL Server 2005, 2008, 2008R2, 2012, 2014, 2016 and 2017 CTP2. dm_db_index_physical_stats (Transact-SQL). As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. Creating a SQL Server Maintenance Plan. The issue was not enough contiguous free space inside the database to arrange the index consecutively. To correct index fragmentation, you can reorganize an index or rebuild an. dm_db_index_physical_stats(DB_ID(N'XXXMYDATABASEXXX'),. We have tried this but it does not work: Amend registry value. With ApexSQL Defrag you can rebuild or reorganize fragmented indexes in real time, as well as create policies and apply them to multiple databases or servers. Defragment on-demand and via schedules. #1637994. Index reorganization is a process where the SQL Server goes through existing index, and cleans it up. This should be part of our SQL Server Maintenance jobs. The operation only requires an intent-shared (IS) table lock. The best recommendation I have is to create your own procedure which loops through the tables of the database and runs DBCC INDEXDEFRAG. You should always do some form of intelligent rebuilding - i. DBREINDEX will always defragment as clean copies are made whereas INDEXDEFRAG churns pages. The operation only requires an intent-shared (IS) table lock. Now, all you have to do is download the T-SQL script, execute it on your Azure SQL DB and execute the maintenance procedure. avg_page_space_used_in_percent, ips. There is one other difference between DBCC DBREINDEX and CREATE INDEX DROP_EXISTING. 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. DBCC DBReIndex – 356610 ms (357 secs or just under 6 minutes to complete). We have a database with 2 tables, one with hundreds of millions of rows (row size<1KB), another 14 million rows. DBREINDEX = rebuild a copy of the index (es) from scratch. dm_db_index_physical_stats in SQL Server 2005 and later. SQL Defrag Manager is a unique SQL Server index defragmentation solution that automates the time-consuming process of finding fragmented indexes based on parameters that you define within a policy for the targeted database. In addition, you can use the dynamic management view sys. Product', PK_Product_ProductID); GO. Here is a. #1637994. Share. Sorted by: 2. page_count FROM sys. Fragmented indexes will primarily slow down ‘search’ performance. You need free space in the db of table_size x 1. For partitioned indexes, sys. . 3. The procedure CommandExecute also has to be installed in order to use the index optimize. [name] as 'Index', indexstats.