000. Product REBUILD GO Index Reorganize : This process physically reorganizes the leaf nodes of the index. OBJECT_ID) AS TableName,ALTER INDEX (Transact-SQL) Skip to main content. I have maintenance job on SQL Server 2012 Enterprise Edition that runs daily to check index fragmentation and reorganize or rebuild the index based on the percentage of fragmentation. The Reorganize Index task encapsulates the Transact-SQL ALTER INDEX statement. I know the sql to perform this action on all indexes in a table is. indexes table. The Query Optimizer. Starting with SQL Server 2016 (13. Best Practices. For information about how to maintenance index, refer to MS document. Membangun kembali atau mengatur ulang indeks rowstore kecil mungkin tidak mengurangi fragmentasi. Ignore anything with less than 15-20 pages. Method 2: Set Change_Tracking to Manual, by using the following command: ALTER FULLTEXT INDEX ON table_name set Change_tracking = Manual Then, create SQL Server jobs to spread out when incremental populations are run. From SQL Server 2014, you can use the WAIT_AT_LOW_PRIORITY option to delay the potential for blocking – see this blog post. Does database on which tables reside have database owner. The T-SQL script in this article can be run by SQL Server administrators to reindex and defragment WSUS databases. I'd just add that adding the line PRINT @sql after the SET @sql =. less than 10% logical fragmentation, don’t. This task uses the ALTER INDEX REORGANIZE statement with SQL Server databases. Agreed, this table is tiny, we have different tables on the same server with millions of records, that rebuild/reorganize in <1 minute. ALTER INDEX ALL ON [table_name] REORGANIZE; However, if you want to rebuild all the indexes on the table,. As visible in the above image, REBUILD and REORGANIZE are the two available choices to play out the trim operation over the page. ALTER FULLTEXT CATALOG [CatalogName] REBUILD. 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. below line will remove the NULL value from the query. . pause public static final. ALTER INDEX [name_of_the_index] ON [table_name] REORGANIZE; If you want to reorganize all the indexes on any table, you can run the following syntax. You will be corrected if you put a lower MB than that specified. If there is no room for it, then SQL Server will reorganize the rows, moving some of the rows onto a new data page, and leaving some on the old data page. A few functions like EXTRACT in SQL let us extract a specific piece of information from the timestamp. Shrink the files: r-click on DB, 'Tasks', 'Shrink', 'Files': Then pick a new file size value slightly larger than the 'Minimum is' value given in the dialog. Compaction is based on the existing fill factor value. 問題の調査分析. To create a new maintenance plan, right click on Maintenance Plan and select New Maintenance Plan and the following window will open. Nadogradite na Microsoft Edge biste iskoristili najnovije funkcije, bezbednosne ispravke i tehničku podršku. The Reorganize Index task encapsulates the Transact-SQL ALTER INDEX statement. Test REORGANIZE WITH (LOB_COMPACTION = ON); This results in some compaction and space savings, but it is not perfect. Test REORGANIZE WITH (LOB_COMPACTION = ON); This results in some compaction and space savings, but it is not perfect. If the table remains a heap, while its non-clustered indexes have both reorganize and rebuild options, the heap does not have a reorganize option. The page swapping can CRUSH you (and the tlog and data files with writes) when you have. 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. 4. Please refer to SQL Server Maintenance Plan Reorganize Index and Update Statistics Tasks to get more information about how to design the maintenance plan. In this instance, it generated the following code: Using above query, you could also query the progress of backup,restore,dbcc command and so on. If You have few indexes in. SQL Server Tools. Memory requirements for partitioned index operations that require sorting can be greater if the Query Optimizer applies degrees of. Then, it combines rowgroups. You can apply a new fillfactor when you rebuild an index. DBCC DBREINDEX rebuilds an index for a table or all indexes defined for a table. However, the REBUILD still needs to take a lock for a moment to swap the old index for the new index. Надстройте до Microsoft Edge, за да се възползвате от най-новите функции, актуализации на защитата и техническа поддръжка. For a dedicated SQL pool table with an ordered CCI, ALTER INDEX REBUILD will re-sort the data using tempdb. SQL Server Index Rebuild and Reorganize Script. REORGANIZE, or to rebuild the index using ALTER INDEX. dm_db_index_physical_stats (Transact-SQL). In my previous post, SQL Server Maintenance Plans and Parallelism – CHECKDB, we looked at the degree of parallelism used when CHECKDB is run. The fi rst factor is whether you have SQL Server Standard Edition or SQL Server Enterprise Edition. REBUILD vs. SQL DBA,SQL Server MVP(07, 08, 09) A socialist is someone who will give you the shirt off *someone else's* back. Right-click the Indexes folder and select Reorganize All. Michelle Ufford (a. We know for sure locking/blocking is occuring, since the table is under heavy use in the maintenance window. Reorganize or rebuild an index SQL Server Management Studio. It also performs online defragmentation. We can also run the task by running the corresponding job in SQL Server Agent. Shrink the database: r-click on DB, 'Tasks', 'Shrink', 'Database' (tick the 'Reorganize files checkbox) With this, I was able to reduce the percentage of 'unused' space in the Disk report. インデックスについて理解する前に、SQL Serverのデータの構造についても理解しておきましょう。 SQL Serverのデータは、ページという8KBの論理単位で構成されています。 さらに、ページ8個で構成された単位をエクステントといいます。 ページの. Avoid using these data types in new development work, and plan to modify applications that currently use them. One SQL Server instance acts as a primary instance called the principal, while the other is a mirrored instance called the mirror. Are there any advantages or disadvantages to using " UPDATE STATISTICS (Index name) " as opposed to "ALTER. These pages can get empty space on them and become out of order over time as well. REORGANIZE vs. Scale back down once the index rebuild is complete. A nonclustered columnstore index functions similarly to a clustered. If the former, you could do a shrink and then ALTER INDEX. SQL Server database mirroring is a disaster recovery and high availability technique that involves two SQL Server instances on the same or different machines. If this catalog has many indexes this rebuild could take a long time. Index Defrag Script V4. Here's another script to add to the list. If there are frequent changes to the full-text catalog, use this command. Review Deeper insight into unused indexes for SQL Server tip. When the process completes, switch the recovery model back to Full or Bulk-Logged and take a full database backup. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. Applies to: SQL Server 2016 (13. Since you can have multiple columns in a table, here are a few considerations for index key columns. 1. So far, all good. Expand the Indexes. x) and later versions, Azure SQL Database, and Azure SQL Managed Instance: version_record_count:. Also you need to take account of below from BOL:SQL: Procedure for rebuild and reorganize indexes like Microsoft says. It doesn’t work on the intermediate pages between the root and the leaf. A new pane will appear with all tables in. How to Reorganize a Table (Doc ID 151588. For a dedicated SQL pool table with an ordered CCI, ALTER INDEX. We know for sure locking/blocking is occuring, since the table is under heavy use in the maintenance window. You searched for: sql server reorganize. ALTER INDEX (Transact-SQL) ข้ามไปยังเนื้อหาหลัก เบราว์เซอร์นี้ไม่ได้รับการสนับสนุนอีกต่อไปPinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 22 years of hands-on experience. 000 rows. In Object Explorer, connect to an instance of the SQL Server Database Engine and then expand that instance. We check the time for sample select query - it was 2s just after index creation. 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. On the Table Designer menu, click Indexes/Keys. In the Database, there is only one. Expand the table on which you want to reorganize an index. Two types of Indexes are: Clustered Index; Non-Clustered Index; What is a Clustered index? Cluster index is a type of index which sorts the data rows in the table on their key values. If the index is disabled, rebuilding brings it back to life. Note: You can select “Reorganize All” to reorganize all the indexes in the table. USE AdventureWorks; GO ALTER INDEX ALL ON Production. Select the box to the left of the column name that you want to reorder. Download Microsoft Edge More info about Internet Explorer and Microsoft Edge Table of contents Exit focus mode Read in English. Jul 13, 2014 at 5:02. The Reorganize Index task reorganizes indexes in SQL Server database tables and views. Stack Exchange Network Stack Exchange network consists of 183 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. REORGANIZE Tells SQL Server to perform a master merge, which involves merging the smaller indexes created in the process of indexing into one large index. On the 2nd server it ran for more than 3. On the next dialog box, make sure the File type is set to "Data" to shrink the mdf file. Usually, you should rebuild the index if it has a fragmentation greater than 30% and reorganize it if it has less than 30% fragmentation. If an index is between 10% and 30% fragmented, I will REORGANIZE the index and UPDATE the statistics. To review, open the file in an editor that reveals hidden Unicode characters. I'm just using the reorg index task that is in the maintenance plan designer GUI. RCSI utilizes tempdb heavily but gives performance boost. Troubleshoot SQL Server backup failures by using Windows Event Viewer; Troubleshoot SSH;. Attempt to perform an online rebuild. 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): ALTER INDEX ALL ON mySchema. Цей браузер більше не підтримується. On larger tables (50GB table is getting there) I've seen REORGANIZE consume all transaction log space if you follow this rule. dm_db_index_physical_stats (Transact-SQL). It cames in two flavours: online and offline. Speaking for SQL Server, I tend to choose a index size and index fragmentation level at which point I begin performing index maintenance. You can also set a threshold so that it only considers indexes over a certain size so you're not doing unnecessary rebuilds on tiny indexes. x), Mesin Database SQL Server mengalokasikan ruang menggunakan tingkat campuran. GO. This improves the Qualification Limit for REORGANIZE to remove deleted rows from a rowgroup in Clustered Columnstore Index (CCI) in SQL Server 2019. For now, I have just turned off the weekly index reorganize task which is not really a good long term solution. The data and log files are 10 MB each and the data file contains 6 MB of data. In Object Explorer, connect to an instance of Database Engine. ”. This has both benefits and issues. Running the compaction again may or may not improve the situation. Notable benefits: Commonly used queries can be encapsulated in a view and indexed in order to improve read performance (compare running select from a single table versus, for instance, 5. Users(DisplayName) WITH (ONLINE = ON, RESUMABLE = ON, MAX_DURATION = 1); Those parameters mean: ONLINE = ON means you’ve got the money for Enterprise Edition. By re-organize I mean that both tables and indexes are left with no fragmentation. You can use it to move data from one file to other files in the same filegroup, which empties the file and allows for its database removal. Right-click on the Maintenance Plans and go to Maintenance Plan Wizard. 1 – Index reorganize starts from a SQL Agent job. Reorganize: Reorganize indexes with between 11-30 percent fragmentation. In contrast, the column store approach acknowledges that each entity has columnar attributes and groups together the total column details. @databaseToCheck (optional) Values: - NULL: It will scan all databases with compatibility level SQL Server 2005 (90) or later for fragmented indexes. REBUILD creates a separate index if it's over 128 Extents (8MB) which means there's very little contention, which can sometimes make it faster the REORGANIZE. Both versions allow you to specify the. Index on msdb. This view can be used to query the metadata about these fragments. ALTER INDEX index_name ON table_name REBUILD. REORGANIZE, os índices clusterizados, não clusterizados e XML da tabela serão reorganizados. Index maintenance such as index rebuilds are also a wasteful operation. (About 1 TB of data including myIndex (non. To reorganize index SQL Server, right-click it & choose Reorganize. ALTER INDEX TableDetails_UK0 ON TableDetails REBUILD WITH ( PAD_INDEX=OFF, SORT_IN_TEMPDB=ON. In-memory nonclustered indexes are implemented using a data structure called a Bw-tree, originally envisioned and described by Microsoft Research in 2011. ALTER FULLTEXT INDEX ON [tblname] START FULL POPULATION. A page is a small section of a database, typically an 8kb chunk. These scripts are widely tested in the community and are much flexible so that you. If an online rebuild can not be performed due to column types, do an offline rebuild if. This option should be used with great care. IndexOptimize is the SQL Server Maintenance Solution’s stored procedure for rebuilding and reorganizing indexes and updating statistics. TRUNCATEONLY Releases all free space at. Reorganizing an index uses minimal system resources. REBUILD. What is difference between Rebuild index and reorganize in SQL Server? “Reorganize index” is a process of cleaning, organizing, and defragmenting of “leaf level” of the B-tree (really, data pages). The reason why too many page splits can decrease the performance of SQL Server is because of the large number of I/O operations. SQL Server does not maintain when an Index was last rebuild, instead it keeps information when stats were last updated. Description. This is a best practice for performance when you rebuild or reorganize indexes. Ola Hallengren Parameters for Index Rebuild/Reorganize on SharePoint. To create a new SQL Server database diagram. Usually you'd do weekly or daily depending on your usage and maintenance windows. If you got an active connection in that moment, it is possible to happen even a deadlock when the other connection is making an update. backupset. The fix is to update all rebuild index scripts with. If the index is disabled, rebuilding brings it back to life. This makes it more likely that some other session is blocked by your session, and that you may, in turn, become blocked by a lock held by that session. Select the box to the left of the column name that you want to reorder. @operation: {all, index, statistics} (no default) statistics : will run only statistics update. There are lobs on the server, but in a different database. I couldn't understand this, though it says that WHEN to do this, but I would like to know WHY do we need to rebuild and reorganize indexes ?Hi Team, Today when I go through some of the SQL Server performance videos, found one interesting video (Please find the link below), where he said that rebuilding indexes is a very expensive thing and it will clear the cache every time an index rebuild happens, (It means that we indirectly killing the SQL Server everything we. After it completes, we can see the job was successful. Hi, We have SQL Server 2005 EE 62 bit with SP3. Is it better to rebuild big indexes? Or should you reorganize? Learn the pros and cons. Link To find index fragmentation at partition level . [Product] SET ( ALLOW_PAGE_LOCKS = ON ) ALTER INDEX [PK_Product] ON [Production]. This is great if you want to release some space quickly without having an immediate performance impact, however it can effect ongoing performance as the database will become fragmented. If this is a job who owner of the job. You may also want to add a try/catch block so that those tables that do not support online indexing don't cause the entire operation to fail. However, consider fine tuning with it (in development server) if following options are not applicable in your scenario. On larger tables (50GB table is getting there) I've seen REORGANIZE consume all transaction log space if you follow this rule. Open configuration manager and get account name. The purpose is to reduce the size of database and increase the db performance. ‘Online’ is a bit of a misnomer. To fix the fragmentation either rebuild or reorganize the index on the table. Deletes catalog and creates new. If I will do it then what impact will occur on the performance of database because my database size is. Then we join the Reorganize Index Task with the Update Statistics Task by the precedence constraint (the green arrow). Add a comment. Review ALTER INDEX command on MSDN. Make sure that you do this before performance testing because running this statement causes a master merge of the full-text indexes in that catalog. In-memory nonclustered index architecture. Paul Randal. For more information, see Data Types (Transact-SQL). Create an agent WMI alert ('Reorganize Relief Valve') on a performance condition. Otherwise you're holding an exclusive lock on the table/partition before you start the reorganize. Attempt to perform an online rebuild. Add a comment. In SQL Server you can specify a list of columns in the CONTAINS query. First, we will start the index reorganization in a session using the following T-SQL code. SQL Server. Replace XXXMYTABLEXXX with the name of a table. 10 Answers. dm_db_index_physical_stats (NULL, NULL, NULL, NULL, NULL); GO. In my 2-day SQL Critical Care®, I quickly assess your application’s performance, determine the root cause of the slowdowns, and then get everyone on the same page for permanent pain relief. Requires membership in the sysadmin fixed server role or the db_owner fixed database role. Rebuild or reorganize depending on the specified fragmentation threshold values. I want to rebuild or reorganize indexes in a table. It is used when the operation takes a. declare @tableName nvarchar(500) declare @indexName nvarchar(500) declare @indexType nvarchar(55) declare @percentFragment decimal(11,2) declare FragmentedTableList cursor for SELECT OBJECT_NAME(ind. April 1, 2009 at 5:07 am. I do the maintenance from SQL Server Agent jobs behind the scenes. When rebuilding offline your index is completely unavailable, but the operation is faster than that online. From SQL Server 2014, you can use the WAIT_AT_LOW_PRIORITY option to delay the potential for blocking – see this blog post. The simpler solution is to use ALTER INDEX REORGANIZE, or DBCC INDEXDEFRAG. I’m a SQL Server consultant. Need more info. If You have few indexes in. Reorganizing also compacts the index pages. Monitor tempdb during rebuild operations. Backup Up Database (Full). Yes, just the table and any query that tries to access that table. Reorganizing an index uses minimal system resources. The rebuild command will defragment all those intermediate pages. resume public static final EAlterIndexOption resume. In this example, the code creates a daily SQL Agent job that runs at 23:30 (11:30 p. I managed to find this blog post with a magick script which allegedly does the task, can't check because this seems to not work for SQL Server 2014 which I am running, query blocks waiting for a Shared Lock. , from. To rebuild or reorganize indexes manually, head over to the Fragmentation tab. Até e incluindo o SQL Server 2014 (12. Rebuild the Indexes if the Fragmentation level is > 30%. Viewed 2k times. Hingga, dan termasuk, SQL Server 2014 (12. SQL Server ALTER INDEX Syntax. You may be blocked making these changes by an important. This is known as page splitting . Note: You can select “Reorganize All” to reorganize all the indexes in the table. Maybe someone will find it useful though so I will just leave it here. It also performs online defragmentation. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. In this article. Замініть його на Microsoft Edge, щоб користуватися перевагами найновіших функцій, оновлень безпеки та технічної підтримки. 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. HeapTest ( Id INT not NULL Default (1), Col1 char (5000) Not null Default ('Heaps Are Cool') ) SET NOCOUNT ON Insert into dbo. First, it reduces the size of the columnstore by physically removing deleted rows when 10% or more of the rows in a rowgroup have been deleted. dm_db_index_physical_stats DMV). The query causing the block is in the format: ALTER INDEX [indexName] ON tableName REORGANIZE. Click Next, and you can define the Update Statistics task. 2. USE AdventureWorks; GO ALTER INDEX ALL ON Production. The Reorganize Index task also includes an option to compact large object data. The following table lists the types of indexes available in SQL Server and provides links to additional information. Pinal has authored 13 SQL Server database books and 56 Pluralsight courses. ALTER FULLTEXT INDEX ON [tblname] START FULL POPULATION. Tip. Reorganizing an Index should be done when you have elevated amounts of white space within your index (i. Index Rebuild operation first drops and then recreates the index. For example, one of the indexes with a page_count of 967 has a fragmentation percentage of. 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. Thanks for your. For legacy reasons, we have a single full-text catalog that contains all of our full-text indexes. SQL Server. SQL Server does not maintain when an Index was last rebuild, instead it keeps information when stats were last updated. I used the sp_who2 procedure to see which queries were waiting, and which other query they were blocked by. Starting with SQL Server 2016 (13. When a table has multiple indexes, create the clustered index first, then the nonclustered. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. Many people (and even solutions) in the SQL Server community say you need to look at Index Fragmentation levels (e. Rebuild Index. . Execution Time of Select Statement. regarding your particular need to do it on a subset of tables - don't worry about creating a custom script for it. 0. ALTER FULLTEXT CATALOG [CatalogName] REBUILD. How to ALTER INDEX for every Table in my DataBase. This is a pretty small index based on the stats you have in addition the table is pretty skinny. 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. Reorganizing only works on the leaf pages. Deletes catalog and creates new. Large object data is data with the image, text, ntext, varchar (max), nvarchar (max), varbinary (max), or xml data type. Drag the column to another location within the table. 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. However, you can use the following methods to rebuild your indexes: Method 1: Create a SQL Server agent job to rebuild indexes and update statistics. (e. Running the compaction again may or may not improve the situation. REORGANIZE Tells SQL Server to perform a master merge, which involves merging the smaller indexes created in the process of indexing into one large index. It is used when the operation takes a. The intent of this SQL Server query is to: Dynamically work rebuild/reorganize all indexes in all tables in all databases on a server. 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. Index Rebuild : This process drops the existing Index and Recreates the index. By allowing an index to be rebuilt dynamically, indexes enforcing either PRIMARY KEY or UNIQUE constraints can be rebuilt without having to drop and re-create those constraints. Online rebuilds are online available on the Enterprise version of SQL Server and your version probably isn't, so just set the operation not to be run "Online" on you Wizard. avg_page_space_used_in_percent column in the sys. Index fragmentation is pretty meaningless in regards to performance. Therefore, you do not need to update statistics after performing ALTER INDEX REBUILD, DBCC DBREINDEX, DBCC INDEXDEFRAG, or ALTER INDEX REORGANIZE operations. If the older date partitions are pretty static , you might benefit from partition level index rebuild / reorganize, depending on sql server version. However, recently this approach has. Use a columnstore index to efficiently run real-time operational analytics on an OLTP. x)) and Azure SQL. Using SQL Server Management Studio (SSMS) To shrink a data or log file using SSMS. Bulk amount records are deleted and updated. 1 lists all tokens that are key words in the SQL standard and in PostgreSQL 16. Make sure to thick the Enabled checkbox. Files are always shrunk from the end. Agreed, this table is tiny, we have different tables on the same server with millions of records, that rebuild/reorganize in <1 minute. Microsoft Certified Master: SQL Server, MVP, M. Expand the table on which we want to reorganize the indexes. This is great if you want to release some space quickly without having an immediate performance impact, however it can effect ongoing performance as the database will become fragmented. TLDR; (rewritten based upon comments): Reorganising can allow for additional space to be released rather than just releasing the free space allocated at the. USE AdventureWorks; GO ALTER INDEX ALL ON Production. Update Statistics. The fill factor determines the amount of empty space on each page in the index, to accommodate future expansion. Last weekend the index maintenance took more than 5 hours and the full backup was running at the same time. Този браузър вече не се поддържа. GO. If an index contains less than 100 pages, I will perform no maintenance. You can safely stop it but you need to find out why your database became slow. Reorganizing an index is always executed online. Bulk amount records are deleted and updated. The rebuild is being performed during a. This means that an index can be rebuilt without knowing the structure of a. If an online rebuild can not be performed due to column types, do an offline rebuild if. Index maintenance in my opinion is not one of them. But commit your whole transaction before reorganize. RS Repacked Basic Script available time ago and free to use on MSDN: “SQL Script for SQL Index Maintenance (Degraf or Rebuild)” HOW SYSTEM WORK ? Example : Analysis indexes defragmentation RATIO < 30% * “30” is an arbitrary decision point at which to SWITCH between REORGANIZING OR REBUILDING. A table may only have one columnstore index on it at a time, regardless of whether it is clustered or nonclustered . Right-click on Maintenance Plans and select New Maintenance Plan…. Shrinking is a wasteful operation. Wednesday, February 7, 2018. sqL_handLe sqL. 1 Answer. He loves SQL Server query optimizer`s capability to process the queries optimally. March 8, 2013. The index fragmentation level can be found using the sys. 60 (X64) (Build 7601: Servic. Use the Rebuild Index Task dialog to re-create the indexes on the tables in the database with a new fill factor. . 2. First, it reduces the size of the columnstore by physically removing deleted rows when 10% or more of the rows in a rowgroup have been deleted. e. The REORGANIZE just ran until the log expanded and consumed all disk space. Shrinking is a wasteful operation. Under Select a page, select Options. g. If you read complete article it was trying to point out the commands or operations in SQL Server which would require additional disk. Follow answered Nov 29, 2020 at 19:26. However, consider fine tuning with it (in development server) if following options are not applicable in your scenario. 5) MS-SQL Server - Fantastic Old Driver; MS-SQL Server - OLE DB; MS-SQL Server. The fix: Figured out that this cannot be done. rebuild sql-server-2005 oracle performance clustered-index sql-server-2008-r2 fragmentation blocking indexing sql full-text sql-server reorganize tsql sql-server-2008 indexes sql-server-2012 alter-table unique maintenance table partition index-performance sql-server-2000 mssql unique-constraint. Reorganising can. sp_resetstatus tempdb.