Expand the Indexes. This point here is extremely important. When we were listing the fragmanted indexes our scope was on the indexes that are used in expensive SQL Statements. Stats will not be updated if you perform a rebuild. In our previous blog post, we got to know, how to find out all fragmented indexes in a database. As data is added to the table, the free space fills because the fill factor isn't maintained. Enter single user mode. Fragmentation of your SQL Server’s internal allocations. This article shows an example of how to manually perform defragmentation on an index using SQL Management Studio. Paul Randal. Make sure to thick the Enabled checkbox. 0. This article explains how to create customized policies for index defragmentation jobs for SQL Server Introduction When creating indexes, database administrators should look for the best settings to ensure minimal performance impact and degradation. Last week I decided to play with SQLFool's Automated Index Defrag Script and found it very usable and worthwhile. In that case, the Storage Engine creates a new, empty page and moves 50 % of the rows (usually, but not always) from the full page to the new page. 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. You need free space in the db of table_size x 1. create table dbo. [index_id] The name of the index. Note that a heap index number will be zero. Defragmentation utilities may lock sections of the file, preventing SQL Server from completing a read or write operation. The SYS. SQL Server. Based on the query analysis output, rebuilding or reorganization of indexes must be done. SELECT OBJECT_SCHEMA_NAME(ips. Consequently, the fragmentation adversely affects the performance of SQL Server. There are two ways of doing that: (i) by using the ‘ DBCC SHOWCONTIG ‘ command, and (ii) by using the ‘ sys. SQL - defragmenting an index on a compressed table. Review Using SQL Server DMVs to Identify Missing Indexes tip. It’s advisable to remove those often. This puts unnecessary pressure on the buffer pool and also negatively impacts. For the SQL Servers we manage for our. In order to solve this problem, it is necessary to start with analyzing the index and evaluating the degree of its fragmentation. The rebuild command will defragment all those intermediate pages. Defragment indexes on your SQL SCCM database every night. It reorgs indexes when fragmentation is below 30% else it rebuild the index. HSQLDB version 1. 2. Databases with no index defragmentation were an average of 5% fragmented. Open-file defragmenting affects performance. Note that the time limit is checked BEFORE an index defrag begins, thus a long index defrag can exceed the time limit. SQL Defrag Manager is a unique SQL Server index defragmentation solution that automates the time-consuming process of finding index fragmentation in SQL Server based on parameters that you define within a policy for the targeted database. 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. In it, enter the Job name, owner, optionally Category. Index fragments occur when any transaction takes place in database table. 19. If avg_fragmentation_in_percent value is > 5% and < = 30% then you should Reorganize Index. The defragmentation of a heavily fragmented index can generate more log than a fully logged index creation. This tool provides index analysis to manage index defragmentation, including rebuild and reorganize fragmented indexes . SQL Server Agent job alert configuration. SQL Server allows us to create only one Clustered index per each table, as the data can be sorted in the table using one order criteria. I have created multiple. Check the comment header block for its documentation. When you purge the table, you need to rebuild the index(s) on the table which will defrag the table data. SQL will order its data file, but that is still subject to the OS's allocation of physical space for that file. SQL - defragmenting an index on a compressed table. Aug 26, 2015 at 15:42. SQL Server 2000 introduces a new DBCC INDEXDEFRAG statement to defragment clustered and nonclustered indexes on tables and views. dm_db_partition_stats and sys. SQL Defrag Manager enables database teams to be more productive while eliminating one source of potential performance problems. Basically, do the minimum commensurate with your fragmentation levels. 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. SQL Server locks acquired with SQL Server online index rebuilds. This REBUILD option is available in SQL Server 2008 onwards. Yes it will - but only to a certain degree. That article is in-depth and difficult to summarise in this reply, but it comes down to creating an asynchronous. A starting point for you could be to run a maintenance plan against this database. This causes a lot of free space or, as you call it, fragmentation. I do not understand the distinct, group by or sum(row_count) clauses. txt","contentType. It’s a tool that simplifies the management of SQL Server indexes across your organization. If it grows often, it could concievably become fragmented. I've been tasked with performing defragmentation on all of the tables. These commands are great, but you really need to collect the information and then. If only table_id is specified or if index_id is 0, the data pages of the specified table are scanned. Since we updated from SQL Server 2008 to 2019, the queries have become much slower. 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. Working this way is usually optimal, since SQL Server does not have to update the NCIs while the data is being imported. Copy the detached database file to a different drive on the server. avg_fragmentation_in_percent. The DBCC SHOWCONTIG statement traverses the page chain at the leaf level of the specified index when index_id is specified. We have a database with 2 tables, one with hundreds of millions of rows (row size<1KB), another 14 million rows. Larger indexes have more intermediate levels and pages. Enable Fragmentation Manager through the right-click context menu of any instance or by opening the Indexes tab of SQL Sentry and selecting Enable Now. [name] as 'Schema', dbtables. Columnstore Online Index Rebuilds – Columnstore indexes need more attention to maintenance. For those unfamiliar with this object, it defragments indexes in SQL Server 2005 using the ALTER INDEX command. Find and remove unused indexes – everything that is unused doesn’t do anything good. The best recommendation I have is to create your own procedure which loops through the tables of the database and runs DBCC INDEXDEFRAG. Index fragmentation occurs when SQL Server must split a page to allow for the insertion of a new row. Weekly – 3% fragmented. Fragmentation of SQL Server indexes mainly creates wasted space that affects your server performance much more than one might expect. Modified 13 years ago. Note: In versions 2020. One or more of the databases used by SharePoint Server have fragmented indexes. In Update Statistics they mention one of the solutions:. 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. Check your SQL File allocation. USE DatabaseName –Need to Specify the User Database Name. Having said that, fragmented data can produce unnecessary reads thereby reducing. [avg_fragmentation_in_percent] FROM sys. But think it through. 11:33. Google led me to discover a practice to defrag all indexes per table, but I can't figure out how to do it on all tables. The fill factor determines the amount of empty space on each page in the index, to accommodate future expansion. the filegroup of the index. 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 decideDatabase Index Defragmentation Tool for SQL Server. In this type of index, a pointer to the actual table data is stored in the leaf node. Now we will see how to defrag indexes. Manually shrinking or growing files using T-SQL commands can also contribute to physical file fragmentation. Review ALTER INDEX command on MSDN. Defragment Indexes. dm_db_index_physical_stats ‘ Dynamic Management View (DMV). You also can create a linked server to SQLAZURE and create a sql agent job. Index Rebuild operation first drops and then recreates the index. 0The Transact-SQL programming language provides DBCC statements that act as Database Console Commands for SQL Server. A non-clustered index is the other main type of index used in SQL Server. SQL Server Internal Fragmentation SQL Server Internal Fragmentation is caused by pages that have too much free space. This REBUILD option is available in SQL Server 2008 onwards. Example: Name: Indexrebuild_job; Description: RDS for SQL server agent job for index rebuild. 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. avg_fragmentation_in_percent <= 30 THEN 'ALTER INDEX [' + 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. One solution is to deploy a faster I/O subsystem, where page splits would be less of an issue. In this case Reorganize option is selected:Databases with no index defragmentation were an average of 5% fragmented. Here are the MS guidelines. 1. Weekly – 3% fragmented. The first time you enable it, the Fragmentation ManagerWizard displays. This must. The method (not a trick), therefore, is to Create Clustered Index only for the purpose of de-fragmenting the Heap, and drop it afterward. If. The DBCC SHOWCONTIG statement traverses the page chain at the leaf level of the specified index when index_id is specified. The re-inserting of the data in PK order assures that the data is well-defragmented. @dbScope specifies a database name to defrag. 0. Also need to defragment the tables, since the allocations within. We have tried this but it does not work: Amend registry value. This will block all queries to that table using the index till the index defrag is finished. index. 3. Particularly if you are in full recovery. Artemakis Artemiou. I would run it every night, personally, as a general rule. SQL SERVER – 2005 – A Simple Way To Defragment All Indexes In A Database That Is Fragmented Above A Declared Threshold. This job needs to be scheduled and ran on a weekly basis due to. When I got the stats from dm_db_index_physical_stats , there were still 27 records which needed defrag and all of theses were NON CLUSTERED Indexes. Reorganizing an index only deals with the fragmentation that exists, and the more fragmentation there is, the longer a reorganize will take. A proper query analysis plan has to be built and followed. Index Rebuild vs Index Reorganize. In SQL 2005, you can query DMV sys. Our DBs are 24/7, so we need a minimally-invasive strategy. dm_db_index_physical_stats to get information about your index fragmentation (see the avg_fragmentation_in_percent column). You’d have to set this up on your own. Fragmentation causes issues where it takes SQL Server more time to traverse the index tree to find the necessary records. VLF Fragmentation inside of SQL Log files. dm_db_index_physical_stats(DB_ID(N'XXXMYDATABASEXXX'), OBJECT_ID(N'XXXMYTABLEXXX'), NULL, NULL, NULL) AS [ips] INNER JOIN sys. Features: Supports Microsoft SQL Server 2005, 2008, 2008R2, 2012, 2014, 2016 and 2017 CTP2. 3. SQL Server Index Defragmentation. Columnstore Online Index Rebuilds – Columnstore indexes need more attention to maintenance. Here are the changes: Added support for database and object names with special characters. Like Ola's scripts, mine only defrag indexes that need it. It depends on the degree of fragmentation of Indexes. It creates a thread that runs periodically to detect when the database has more than 25% free disk space allocated to it. I know that there are really three kinds of fragmentation that I need to be concerned about as a DBA: Index Fragmentation in the SQL data files, including clustered index (table) fragmentation. Your primary concern is getting your SQL Server back online. Missed Connection: Employer Seeking Employee. Specify. 1. [avg_fragmentation_in_percent] FROM sys. In this article, I will provide a mechanism for automating SQL Server index defragmentation implemented in a database used in the company I work for. How Defragmentation Improves Performance. It appears to be a bug in 2012 R2. In a nutshell, SQL Server’s performance can be most improved by focusing on its internals. Index rebuild is a heavy-duty process where index is deleted and then recreated from scratch with entirely new structure, free from all piled up fragments and empty-space pages. SP_BlitzCache can help with finding your worst performing queries. He shows how to analyze indexes and, if necessary, how to go about reorganizing or rebuilding indexes. It is a managed service and Azure manages the infrastructure, database availability, backup restore, and compute resources. This is called fragmentation. Lines 436-443 setup the dynamic SQL to rebuild the index with the specified fill factor if the table is not partitioned. There are two types of fragmentation: Internal Fragmentation and External Fragmentation. dm_db_index_physical_stats system function. In the CREATE INDEX to can tell SQL Server to sort in TempDB vs. Rebuild if > 30%. This should not be a problem. Refer to the below links:The downside to using the Reorganize Index task is that its index defragmentation capability is not as thorough and complete as the Rebuild Index task. avg_page_space_used_in_percent, ips. 25. This mechanism allows defragmenting required indexes on a regular basis since index fragmentation takes place constantly in the 24/7 system. The following example defragments all partitions of the PK_Product_ProductID index in the Production. What is Fragmentation. They’re better than yours (trust me), and they give you more flexibility than built-in maintenance plans. Share This: As the data in the database tables of Microsoft SQL Server changes, their indexes change. Follow. This setting is known as the fill factor. "The ALTER INDEX rebuild and reorganize options cannot be used to defragment and reclaim space in a heap (but they can used to defragment non-clustered indexes on a heap). Auto shrink is a database option that is used to conserve disk space. record_count > 0 AND o. Q2: Generally you do not need to run anything for reindex/update stats. Hi, The widely used thresholds are: Reorganize if fragmentation is between 10-30%. This can be checked using:. "Partitioning Clustered Indexes When partitioning a clustered index, the clustering key must contain the partitioning column. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. If running into a particular performance issue, Microsoft PSS will sometimes recommend a manual full reindex. mdf file size: your disk have to have space to re-allocate a 35-gig file, in order to defragment it. The execute sql task should contain the index rebuild code along with stats rebuild . Product table in the AdventureWorks2022 database. indexes. Just ignore the small indexes, fragmentation is irrelevant for those anyhow. DBCC DBREINDEX('TableName') will rebuild the indexes on the table. The length of time the rebuild takes is related to the size of the index, not the amount of fragmentation in it. Weekly – 3% fragmented. DO: Implement appropriate index fill factors. In order to begin, proceed to Manage Index. 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. Receive email notifications for policy and. To make the script at least a bit faster, I narrowed it down from. I have been trying to defrag indexes in SQL Server 2005 and nothing seems to work. The general consensus is if fragmentation is: Less than 10% – there is no need to do anything to the index. You need free space in the. In a perfect world our C drive would be optimally configured, almost static, but in the real world we often have many files on the C drive including system databases, log files, BCP files etc. Greater than 30% – rebuilding the index with the REBUILD option is probably the best option. It will do: Nothing if the fragmentation level is below 5%;. The DB restore may de-fragment (physically) at the disk level, but there will still be the same internal fragmentation at the page level. Logical fragmentation happens when an index leaf page is full and space is required on it, either for an insert or to make an existing record longer (from updating a variable-length column). 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. They are also configured from SSMS. Contact the manufacturer of the defragmentation tool to learn how files are locked and how this. In the Indexes folder, expand the file. Now, if your existing. With spinning disks, this can be bad. Yes, rebuilding indexes will take a toll on your transaction log file. Watch on. 1. Defragment on-demand and via schedules. Leverage solutions such as Adaptive Index Defrag to automatically manage index defragmentation and statistics updates for one or more databases. SQL Defrag Manager offers a totally new way to identify, optimize, manage and automate SQL Server defragmentation. Otherwise, nothing special. For more, read my post: Stop Worrying About Index Fragmentation. dm_ db_ index_ physical_ stats (in 2005+). Automate the identification of index fragmentation hot spots. Thus it is not advised to run index rebuild during operational hours only during maintenance windows. 1 Answer. 7, on any database context you choose to create the usp_AdaptiveIndexDefrag and its supporting objects, open the attached script, and. ALTER DATABASE [Inter3112] SET OFFLINE GO. avg_fragmentation_in_percent as Fragmentation, indexstats. Index Recommendations and ORDER BY’s. This puts unnecessary pressure on the buffer pool and. No, there is no auto-magical defragging of indexes. ApexSQL Defrag is a powerful application used for scheduled analyzing and defragmenting of SQL Server database indexes. Maintenance. Your best assistant here is our SQL Defrag feature, seamlessly integrated with dbForge Studio for SQL Server . That's why as a rule of thumb, for fragmentation greater than about 30%. fulltext_index_fragments catalog view can be used to query the number of fragments comprising a full-text index. The defragmentation schedule must be created manually in all versions. If you have fragmentation, you need to REBUILD or REORGANIZE. When auto-index defragmentation is enabled in Orion, databasemaintinence will sometimes fail to defragment highly fragmented indexes will get defragmented during the Orion database maintenance, which runs at 2:15 AM by default. To reorganize index SQL Server, right-click it & choose Reorganize. Here is a. DBCC INDEXDEFRAG defragments the leaf level of an index so that the physical order of the pages matches the left-to-right logical order of the leaf nodes, thus improving index-scanning performance. For database optimization, we recommend using an index and statistics maintenance script. That article is in-depth and difficult to summarise in this reply, but it comes down to creating an asynchronous. DBREINDEX = REBUILD option "Rebuilding Indexes". Applies to: SQL Server 2022. Chad Boyd. According to Microsoft guidelines, based upon index fragmentation percentage, we may choose to either REORGANIZE,. Optimal. Our Production instance is running SQL Server 2014. 2. Apart from disk space you should not be too worried. while exists (select top 1 Reorganize_SQL from @fragmented_indexes) begin. Sc (Comp Sci) SQL In The Wild : Discussions on DB performance with occasional diversions into recoverability We walk in the dark places no others. I would highly recommend using a tool specific to sql server to defragment the drive(s) on which the files sit. The indexes are left as they were at the time of backup. This must. An index rebuild will always build a new index, even if there’s no fragmentation. Use the ALTER TABLE command to rebuild the Heap. Review Index Fragmentation Report in SQL Server 2005 and 2008 tip. It's. Select the Compact large object column data checkbox to specify that all pages that contain large object (LOB) data are also compacted. Note: You can select “Reorganize All” to reorganize all the indexes in the table. DBREINDEX = rebuild a copy of the index (es) from scratch. The SQL Server Database Engine automatically maintains indexes whenever insert, update or delete modifications take place. OBJECT_ID) + '] REBUILD; ' END, 'GO' FROM sys. Weekly – 3% fragmented. DM_DB_INDEX_PHYSICAL_STATS DMV displays fragmentation information for the data and indexes of the specified object. We would like to show you a description here but the site won’t allow us. When I ran the query again, this was the result: Fragmentation over 70% for 12 indexes, over 30% for 15 indexes. First of all you need to find the fragmentation percentage for the indexes in a database or table. Custom SQL Server Index Defrag and Rebuild Procedures. [Product_B] VALUES (default,'Test') GO 100000. As well as maintenance plans, SQL Server Agent jobs are also a handy way to automate and schedule index defragmentation jobs in SQL Server. Q2, Q3: OPTIMIZE TABLE rebuilds the table by CREATEing a new table and INSERTing all the rows, then RENAMEing and DROPping. If the data isn't ordered inside the data (SQL) pages / extent, then that will result in more reads from the SQL Server side and SSD side of the equation. SQL Sentry Fragmentation Manager helps you make intelligent decisions about index management based on the table and index information collected. Using SQL Server Managed Lock Priority for Online Index Rebuilds. Extra disk space required during SQL Server online index rebuilds. 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. All they do is waste space and resources. Basically, an index rebuild copies the index to another place. Databases with no index defragmentation were an average of 5% fragmented. On smaller databases it ran quite quickly and with the correct and desired effects. 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. 2 (X64). This internal fragmentation occurs when inside the. If you have fragmentation, you need to REBUILD or REORGANIZE. This had a negligible impact. A disk defragmenter moves all files, including the database file, into contiguous clusters on a hard disk. Azure Automation: Automate Azure SQL Database indexes and statistics maintenance. Alter Index Rebuild – 217454 ms (218 secs or just under 4 minutes to complete). Index automation Job script. For example, you can use ApexSQL Defrag to review the index usage statistics and apply the suitable. All they do is waste space and resources. Paul pointed out a couple of other points. Index fragments occur when any transaction takes place in database table. Manually shrinking or growing files using T-SQL commands can also contribute to physical file fragmentation. Expand the Indexes. Fragmentation. Thanks for the info on Showcontig and Index Defragmentation. Leverage solutions such as Adaptive Index Defrag to automatically manage index defragmentation and statistics updates for one or more databases. The Server is running SQL Server 2017 (RTM-GDR) (KB4505224) - 14. 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 – Fragmentation – Detect Fragmentation and Eliminate Fragmentation SQL SERVER – 2005 – Display Fragmentation Information of Data and Indexes of Database Table SQL SERVER – De-fragmentation of Database at Operating System to Improve Performance. One of the reasons for that is fragmentation. Missed Connection: Employer Seeking Employee. Daily – 6% fragmented. Detach the database. Index fragmentation can cause high CPU usage, which means disk usage, and therefore performance degradation. I'd rebuild stats every night at least. Sorted by: 2. I teach the MS 2073 class quite a bit and the course material just. This is called fragmentation. 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). Automate defragmentation policies to multiple databases, tables, and indexes. Indexes with small number of pages (<1000) will usually. The length of time the rebuild takes is related to the size of the index, not the amount of fragmentation in it. DBCC INDEXDEFRAG (AdventureWorks2022, 'Production. e. The following query ran for ten minutes on version 2008. Fragmentation typically happens owing to insert, update and delete transactions. Receive email notifications for policy and. Monthly – 17% fragmented. When partitioning a nonunique clustered index, and the partitioning column is not explicitly specified in the clustering key, SQL Server adds the partitioning column by default to the list of clustered index keys. -- Compute fragmentation information for all full-text indexes on the database SELECT c. Resolution: Reorganize and rebuild indexes. The sys. avg_fragmentation_in_percent, ips. DON’T: Insert records with random key values. The wise use of indexes is a proven method of improving database performance. A. It makes your indexes larger and many operations slower by making the SQL Server access more pages than necessary. DBCC DBReIndex – 356610 ms (357 secs or just under 6 minutes to complete). It automates the time-consuming process of finding fragmented indexes based on policies for the targeted databases. On versions prior to SQL Server 2005 you can defrag standard indexes using the DBCC INDEXDEFRAG command:For a linked list (a B-tree index), than can cause SQL Server to "jump back and forth" in the database file when it read lots of pages (a scan or partial scan). It can be turned on by using the in-app wizard in any version. dm_db_index_physical_stats function is the preferred tool to use to check index fragmentation on any CA or DA database table. December 8, 2009. Maintenance tasks on a database, index, or filegroup. This clause is equivalent to DBCC INDEXDEFRAG. The default is 5 percent. INSERT INTO [dbo]. SQL Server 2005 Index Fragmentation. Artemakis Artemiou. Veritas now uses the heavily debated command DBCC SHOWCONTIG WITH ALL_INDEXES,or DBCC SHOWCONTIG WITH ALL_INDEXES,tableresults (Table results will give you a table format to read) to. physical defragmentation by orders of magnitude. If you have space constraint on the Server then you may need to Shrink the db. The tempdb is used a lot – place it on separate drive to the Log and MDF files. If not specified, all non-system databases plus msdb and model will be defragmented. Try one of the queries below and see if that is what you are looking for: SELECT OBJECT_NAME(OBJECT_ID) AS DatabaseName, last_system_update,* FROM sys. An SQL index is a small and organized lookup table, allowing the SQL Server engine to quickly locate the requested rows of a database table without scanning the entire table. If not specified, all non-system databases plus msdb and model will be defragmented. If your table has a clustered index, the state of the index reflects the state of the table. I want to defrag tables in sql server, I used this code to know the fragmented indexes: sELECT dbschemas. You’d have to set this up on your own. When the SQL Server service is running, all of the mdf and ldf files are considered open and thus skipped. 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 addition, you can use the dynamic management view sys. The name of the index. The best recommendation I have is to create your own procedure which loops through the tables of the database and runs DBCC INDEXDEFRAG. And if it is a clustered index, the entire table is copied. SQL SERVER – Sharpen Your Basic SQL Server Skills – Learn the distinctions between unique constraint and primary key constraint and the easiest way to get random rows from a table Next Post SQL SERVER – Simple Example of Cursor – Sample Cursor Part 2 This causes a lot of free space or, as you call it, fragmentation. 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. DON’T: Update records to make them longer. Because the smallest unit of data to be cached is an 8 kB data page, not a single row, it also. 4 Answers. I made them up. Indexes with small number of pages (<1000) will usually. 16 years ago. dm_db_index_physical_stats also provides fragmentation information for each partition. OBJECT_ID) AS TableName, fq. 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. While you are at it, by all means, use. 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. This database has a few hundred tables and each table has a range of 1 to 15 indexes per table. Double Click on one of the SQL Statements. This. 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 rebuild them completely when it goes beyond 30% (at least that's the numbers I've heard advocated in a lot of places). Email alerts can be tailored to inform the staff when fragmentation is necessary and when the process is complete. Script to Manage SQL Server Rebuilds and Reorganize for Index Fragmentation. So let’s take one thing at a time.