But, before considering maintenance of indexes, it is important to answer two main questions:. regarding your particular need to do it on a subset of tables - don't worry about creating a custom script for it. If you read complete article it was trying to point out the commands or operations in SQL Server which would require additional disk. 2. The rebuild is being performed during a. The REORGANIZE just ran until the log expanded and consumed all disk space. SQL Server also supports nonclustered columnstore indexes. Select “reorganize index” and “rebuild index. Share. I'd just add that adding the line PRINT @sql after the SET @sql =. Expand Databases and then right-click the. 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. For more information about managing indexes, see Reorganize and. you are reading your query result incorrect. When a table has multiple indexes, create the clustered index first, then the nonclustered. SQL Server does not maintain when an Index was last rebuild, instead it keeps information when stats were last updated. 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. But short answer is that you want to look at ALTER TABLE. Starting with SQL Server 2016 (13. Now, all you have to do is download the T-SQL script, execute it on your Azure SQL DB and execute the maintenance procedure. The. 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. Customization » Web server » Web configuration. If you don’t specify the string length, its default value is 1. This opens the Full-text index Properties dialog box. For more information, see Data Types (Transact-SQL). To run the Maintenance plan, make sure your SQL server agent service is running. Rebuilding an index means that a whole new set of pages is allocated for it. In this article. Correct, I don't let Sharepoint boss my SQL server around. Hash indexes consume a fixed amount of memory, which is a function of the bucket count. 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. If You have few indexes in. Reorganize Index. DBCC DBREINDEX rebuilds an index for a table or all indexes defined for a table. 10. k. REORGANIZE pernyataan, indeks berkluster, non-kluster, dan XML pada tabel diatur ulang. Mohamad Mahmoud Darwish. Once you select that option it will bring up the following screen. resume. As you see, with index pages cached in memory, index rebuild time is just 10 seconds as it is shown in Figure 5. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. Expand the Indexes. Starting with SQL Server 2016 (13. We want to create an index. The following example returns all statistics for all tables and indexes within the instance of SQL Server by specifying the wildcard NULL for all parameters. Merging the full-text index fragments can improve performance and free up disk and memory resources. Both are fully logged in the FULL. 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. Product REBUILD GO Index Reorganize : This process physically reorganizes the leaf nodes of the index. For rows that contain LOB columns, the normal page will contain a reference to the LOB page. It also performs online defragmentation. April 1, 2009 at 5:07 am. This is how you end up with a row store. Review Deeper insight into unused indexes for SQL Server tip. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. Reading such data follows the same format. Expand the Indexes. WITH FULLSCAN. For example, we can extract DAY, MONTH, YEAR, HOUR, MINUTE, SECONDS, etc. Lock durations are short and will cause minimal blocking of queries. Faceți upgrade la Microsoft Edge pentru a profita de cele mai noi funcții, actualizări de securitate și asistență tehnică. If you need more tempdb space, scale up the pool. 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. The toolkit enables you to map out your SQL Server inventory and perform health and security audits to discover performance issues, availability threats and. And using reorganize or rebuild to maintain the non-clustered indexes as necessary. When you rebuild a table with clustered index, it'll automatically rebuild the clustered index (clustered index is the table). On a very busy system, attaining this exclusive lock can sometimes be a problem. This requires using a CREATE INDEX with DROP_EXISTING statement for all the indexes in the file and can be complex. 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). How to Reorganize a Table (Doc ID 151588. It does this by dropping the existing plan from the procedure cache, forcing a new plan to be created the next time that the procedure or. Download Microsoft Edge More info about Internet Explorer and Microsoft Edge Table of contents Exit focus mode Read in English. The resulting database will only be used in read-only mode. 1. #969726. Reorganize is always an online process. For columnstore indexes in SQL Server (Starting with SQL Server 2016 (13. For example, one of the indexes with a page_count of 967 has a fragmentation percentage of. 4. Firstly you should take into account the page_count of the index. You can customize the amount of fragmentation in an index before it's rebuilt or reorganized, and this cuts down on the amount of work involved in reindexing. Click Close. To review, open the file in an editor that reveals hidden Unicode characters. The page swapping can CRUSH you (and the tlog and data files with writes) when you have. Rebuilding your indexes will generate a lot of unused allocated space in the data file. 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. ndf. For example, one of the indexes with a page_count of 967 has a fragmentation percentage of. 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. Right-click on Maintenance Plans and select New Maintenance Plan…. ALTER FULLTEXT INDEX ON [tblname] START FULL POPULATION. pause public static final. See the maintenance plan and SQL Server Agent job history logs for details. SQL Server index fragmentation is unavoidable, but you can minimize the negative effects of fragmentation on database performance. . 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. · In addition , please take a look at Ola's great utility to take. When doing that replace, it will get an schema modification lock. ALTER INDEX [myIndex] ON [dbo]. This option should be used with great care. Then I shrink the log file using SQL Server Management Studio (Tasks -> Shrink -> Files and selected log file) and selected shrink action as "Reorganize pages before releasing unused space. REORGANIZE, or to rebuild the index using ALTER INDEX. Use the Rebuild Index Task dialog to re-create the indexes on the tables in the database with a new fill factor. Deletes catalog and creates new. Sorted by: 5. On the Table Designer menu, click Indexes/Keys. Solution Usually, when indexes are not too fragmented (as suggested by Microsoft, when fragmentation level is between 5% and 30%), it is recommended to reorganize indexes. backupset. How to Reorganize and Rebuild Indexes in SQL Server Database? Written By Priyanka Chauhan Approved By Raja Jegan R Updated on October 18, 2023 Min. Applies to: SQL Server. Starting with SQL Server 2016 (13. 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]. If you look into the sys. If this catalog has many indexes this rebuild could take a long time. I used this approach to improve performance and it worked perfectly for a long time. SQL Server development version and Enterprise version has option ONLINE, which can be turned on when Index is rebuilt. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. CREATE TEXT SEARCH DICTIONARY — define a new text search dictionary. REBUILD. 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. To configure this option, open a maintenance plan and on the top bar beside Manage Connections…. You can use Ola's Index maintenance solution or Michelle Ufford's - Index Defrag Script. The differences between those and the other. Select the box to the left of the column name that you want to reorder. 0 databases. 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. For legacy reasons, we have a single full-text catalog that contains all of our full-text indexes. REBUILD will not just rebuild index, but also force update of corresponding statistics. public static final EAlterIndexOption reorganize. Users(DisplayName) WITH (ONLINE = ON, RESUMABLE = ON, MAX_DURATION = 1); Those parameters mean: ONLINE = ON means you’ve got the money for Enterprise Edition. Large object data is data with the image, text, ntext, varchar (max), nvarchar (max), varbinary (max), or xml data type. create table dbo. Review CREATE INDEX. You could also refer another query which may be helpful to you. I have been creating indexes manually in the database and only on those tables on which requires. Até e incluindo o SQL Server 2014 (12. Monitor tempdb during rebuild operations. If the index is disabled, rebuilding brings it back to life. Execute SQL Server Agent Job. g. ALTER INDEX ALL ON [table_name] REORGANIZE; However, if you want to rebuild all the indexes on the table, you can run the following. Your applications would read the data from left to right as you would with a book. The link points to SQL Server 2014 docs, but the syntax should work on 2005 and 2008 as well. 5 hours before I stopped the rebuild. x), you can create nonclustered B-tree or rowstore indexes as secondary indexes on a clustered columnstore index. Expand the table on which you want to reorganize an index. (For space reasons, only the latest two versions of the SQL standard, and SQL-92 for historical comparison, are included. That can be found using the STATS_DATE function. Надстройте до Microsoft Edge, за да се възползвате от най-новите функции, актуализации на защитата и техническа поддръжка. Then we join the Reorganize Index Task with the Update Statistics Task by the precedence constraint (the green arrow). For example, you can use ApexSQL Defrag to review the index usage statistics and apply the suitable maintenance. sp_helpdb 'databasename' provides the list of data&log files in a database. This removes fragmentation, reclaims disk space by compacting the pages based on the specified or existing fill factor setting. From Rebuild or Reorganize: SQL Server Index Maintenance by Kendra Little: Short version: Rebuild: An index ‘rebuild’ creates a fresh, sparkling new structure for the index. Usually you'd do weekly or daily depending on your usage and maintenance windows. Right-click the table on which you want to specify an index's fill factor and select Design. 【SQL server】利用状況モニターの情報取得について. Test REORGANIZE WITH (LOB_COMPACTION = ON); This results in some compaction and space savings, but it is not perfect. ALTER INDEX REORGANIZE; however, log space is required. Additionally, after reorganizing indexes it is reasonable to update the statistics as this operation does not update the statistics like the index rebuild operation. Service account don't have permissions. Expand the Indexes folder. To fix the fragmentation either rebuild or reorganize the index on the table. – user2438237. SQL Server offers REBUILD and REORGANIZE options, but they are available only for a full-text catalog (which may contain any number of full-text indexes) in its entirety. CREATE TEXT SEARCH PARSER. First, we will start the index reorganization in a session using the following T-SQL code. Reorganizing or rebuilding a cluster index does not have any impact on the non-cluster indexes in SQL Server 2000 SP4 or above, or any version of SQL 2005 or. Reorganizing an index defragments the leaf level of an index by physically re-ordering pages to match the logical order. dm_os_wait_stats WHERE wait_type LIKE '%_LOW_PRIORITY'. (and even with the Enterprise Edition, is blocking when rebuilding clustered indexes)If you want to fully automate your SQL Server Index maintenance then I seriously recommend that you check out Michelle Ufford's stored procedure for this. It ultimately depends on SQL Server Edition and the max degree of parallelism setting for the instance, which is not the case for index rebuilds (today’s topic, as you. The following shows the syntax of NVARCHAR: In this syntax, n defines the string length that ranges from 1 to 4,000. Here are two lesser known pitfall about the purge backup history command: 1. SQL. – user2438237. In-memory nonclustered indexes are implemented using a data structure called a Bw-tree, originally envisioned and described by Microsoft Research in 2011. There are lobs on the server, but in a different database. I used the sp_who2 procedure to see which queries were waiting, and which other query they were blocked by. Sumanta Roy (5/26/2011) Select Name as IndexName, STATS_DATE ( object_id , index_id ) as IndexCreatedDate. dm_db_index_physical_stats ) function accepts parameters such as the database, database table, and index for which you want to find fragmentation. This can be demonstrated by small test. . MS-SQL Server - Ghada (A Kalash, Full of Unique Th. Auto Shrink Verify by any chance the AUTO SHRINK option set to ON at database level as this could cause heavy fragmentationCreating a SQL Server Maintenance Plan. ndf and data_file_2. The first file has 100MB free space and the second has 200MB free. Note: reorganise and rebuild are not exclusive but work different ways. Needless to say that in order to defrag a. A SQL Server DBA myth a day: (29/30) fixing heap fragmentation. RDS for SQL Server doesn't have maintenance plans that automatically create plans and jobs to rebuild or reorganize indexes. This browser is no longer supported. 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. We have a maintenance script which analyses the page_count and fragmentation of the indexes and follows the following guideline:-. Provide the appropriate name of the maintenance plan. 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. Creating a SQL Server Maintenance Plan. You can go the easy way and use SQL Server Maintenance Plans, but unfortunately they’re very simplistic: you can only say “rebuild all the indexes” or “reorganize all the indexes”. @databaseToCheck (optional) Values: - NULL: It will scan all databases with compatibility level SQL Server 2005 (90) or later for fragmented indexes. Using above query, you could also query the progress of backup,restore,dbcc command and so on. 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. An index reorganize holds an intent-exclusive table lock throughout the operation, which will only block shared, exclusive, and schema-modification table locks. 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. The Reorganize Index task reorganizes indexes in SQL Server database tables and views. Jul 13, 2014 at 5:02. 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. It is recommended to use an integer data type in the index key. For now, I have just turned off the weekly index reorganize task which is not really a good long term solution. 1. If you need more tempdb space, scale up the pool. Overview of SQL Server NVARCHAR data type. – Ed B. Rebuilding of the index is changing the whole B-tree, recreating the. For more information, see sys. In this article. In Object Explorer, right-click the table with columns you want to reorder and select Design. This improves the Qualification Limit for REORGANIZE to remove deleted rows from a rowgroup in Clustered Columnstore Index (CCI) in SQL Server 2019. Modified 6 years ago. Shrinking is a wasteful operation. ;WITH cte AS ( SELECT object_id, index_id, partition_number, rows, ROW_NUMBER () OVER (PARTITION BY object_id, index_id, partition_number ORDER BY partition_id) as rn FROM sys. The purpose is to reduce the size of database and increase the db performance. For better maintanence of deleted rows in Clustered Columnstore Index, Trace Flag (TF) 11631 and TF 11634 are introduced. Over here it will display all the indexes of the table and you can just click OK. Improve this answer. MyTable REORGANIZE WITH(LOB_COMPACTION = ON). There are two options to fix fragmentation. Check indexes from the index grid and click desired defragment operation from the ribbon. If this catalog has many indexes this rebuild could take a long time. Този браузър вече не се поддържа. 11. Compaction is based on the existing fill factor value. SQL Server. index_id > 0 -- Indexes. Many people (and even solutions) in the SQL Server community say you need to look at Index Fragmentation levels (e. It can be. Reorganising can. If you need to include a schema name, this can. This basically means that data is being persisted into a virtual table which is maintained by SQL Server itself. But commit your whole transaction before reorganize. SQL DBAs and Operations Engineers tools. DROP INDEX when. You need to do more research but basically, reorganize as often as needed to keep your fragmentation under 20-30% until you can rebuild it during off-hours. Open your table in SSMS in design mode: Reorder your columns: It is important to not save your change. Assume you have a couple of log files, a data file, and a database named mydb. In this case you can perform index reorganize and index rebuild operations only on those partitions that really need it, thus making it more efficient by. For higher fragmentation Rebuild is preferred. OBJECT_ID) AS TableName,ALTER INDEX (Transact-SQL) Skip to main content. We can compact the LOB space using: ALTER INDEX PK_dbo_Test ON dbo. Typically, higher a site appears. 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. It is what I consider to be the best index maintenance script I. The following index operations require no additional disk space: ALTER INDEX REORGANIZE; however, log space is required. (Look in the Misconceptions blog category for the rest of the month’s posts and check out the 60-page PDF with all the myths and misconceptions blog posts collected together when you join our Insider list, plus my online Myths and. From sys. - 1: The script will just output the index reorganization or rebuild commands without running them. ALTER INDEX . In this case Reorganize option is selected:Rebuild or Reorganize SQL Index. But yes. SQL Server Index Rebuild and Reorganize Script. The data and log files are 10 MB each and the data file contains 6 MB of data. Neeraj Prasad Sharma is a SQL Server developer who started his work as a dot net programmer. For legacy reasons, we have a single full-text catalog that contains all of our full-text indexes. 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. Background information can be found in Section 4. Index maintenance such as index rebuilds are also a wasteful operation. CREATE TABLE AS — define a new table from the results of a query. 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. 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. After this command is completed, in the command prompt we press Ctrl+C to shut down SQL Server: Now, if we start the SQL Server instance. 1 Answer. An index reorganize holds an intent-exclusive table lock throughout the operation, which will only block shared, exclusive, and schema-modification table locks. To defrag the file simply run Contig [FileName]. 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). When you rebuild, SQL creates a new fresh index. 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). You can safely stop it but you need to find out why your database became slow. Microsoft Certified Master: SQL Server, MVP, M. Below is an example of this technique, where the @PartitonNumber value can be changed in a restart scenario. 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. 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. Applies to: SQL Server, Azure SQL Database, and Azure SQL Managed Instance. #969726. . 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. , from. 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]. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. To create a new SQL Server database diagram. Beginning with SQL Server 2016 (13. myTable REBUILD. 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. PerformActions () If I look at the message for the actual job, all it says is "_Job 'Backup. Reorganize or rebuild an index SQL Server Management Studio. The fill factor is 0. If the last extent is not empty, then the Shrink will fail. Make sure to thick the Enabled checkbox. Since you can have multiple columns in a table, here are a few considerations for index key columns. Both versions allow you to specify the. I do the maintenance from SQL Server Agent jobs behind the scenes. dm_os_wait_stats DMV, you will find 21 new wait types related to the SQL Server 2014 Lock Priorities. See documentation here. 000 rows. Quick explanation: An online Rebuild, rebuilds the indexes on the tempDB making it available to the queries while it is being rebuilt. April 29, 2010. dm_db_index_physical_stats function in SQL Server, and the general recommendations in the Books Online are: If an index has less than 1,000 pages, don’t bother removing fragmentation; If the index has: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. This means that an index can be rebuilt without knowing the structure of a. As visible in the above image, REBUILD and REORGANIZE are the two available choices to play out the trim operation over the page. Need more info. 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. To achieve availability similar to the reorganize. ALTER INDEX index_name ON table_name REBUILD. You can use Ola's Index maintenance solution or Michelle Ufford's - Index Defrag Script. is_ms_shipped = 0 --Excludes any objects created as a part. IndexOptimize is the SQL Server Maintenance Solution’s stored procedure for rebuilding and reorganizing indexes and updating statistics. Create an agent WMI alert ('Reorganize Relief Valve') on a performance condition. You can read more on rebuilding indexes here . ” Select the vault database(s). Viewed 2k times. @operation: {all, index, statistics} (no default) statistics : will run only statistics update. " - Fortune Cookie Wisdom . If there are frequent changes to the full-text catalog, use this command. Because I was blamed for the slow SQL Server mainly because I stopped a. Rebuild can only be done online if you have the enterprise version of SQL Server. Dotnet differences - Download as a PDF or view online for freeIf the SQL Server instance is clustered in a failover cluster, then the machine name that is returned as part of this path is the virtual hostname for the clustered instance. They work differently toward the same end. In Object Explorer, connect to an instance of the SQL Server Database Engine and then expand that instance. Avoid using these data types in new development work, and plan to modify applications that currently use them. In this page, we can select the database (specific database or all databases), objects (specific or all objects). Compaction is based on the existing fill factor value. Review ALTER INDEX command on MSDN. It doesn’t work on the intermediate pages between the root and the leaf. Reorganizing an index is always executed online. This had a negligible impact. You pretty much never shrink, especially not scheduled. The simpler solution is to use ALTER INDEX REORGANIZE, or DBCC INDEXDEFRAG. indexstats. This task uses the ALTER INDEX REORGANIZE statement with SQL Server databases. March 15, 2014 by Ivan Stankovic. ALTER INDEX (Transact-SQL)The fix for this issue was first released in Cumulative Update 6 for SQL Server 2008 Service Pack 1. As we understand it, related to SQL Server 2008 and above: ALTER INDEX. dm_db_index_physical_stats (Transact-SQL). [myTable] REORGANIZE WITH ( LOB_COMPACTION = ON ) I have the above query running for 16 days (still running), the table is a dummy table used for benchmark tests, it has over 10 Billion rows. I specialize in performance tuning emergencies. . Agreed, this table is tiny, we have different tables on the same server with millions of records, that rebuild/reorganize in <1 minute. Suggest rebuilding all tables -- Ouch -- followed by. 4. If the command that's running is a reorg, you can just kill it. Pinal has authored 13 SQL Server database books and 56 Pluralsight courses. . It also performs online defragmentation. Description. dm_db_index_physical_stats function in SQL Server, and the general recommendations in the Books Online are: If an index has less than 1,000 pages, don’t bother removing fragmentation; If the index has:It is documented that you can rebuild the index ONLINE for those indexes which has LOB columns as the index key. If you want to try : I would like you to use READ_COMMITTED_SNAPSHOT isolation level for this operation and see if you succeed. Paul Randal. To create SQL Server agent that will defragment specified indexes automatically, perform the following steps: Expand SQL Server Agent in Object explorer, right click on Jobs, and select New Job…: In General tab, specify the name and description for the job. Is this possible to do? Large objects (LOBs) are stored in different "pages". --Note: You need to specify the fill factor. Attempt to perform an online rebuild. SQLServer: CPU負荷をかけている機能を見つけ出す. 1 – Index reorganize starts from a SQL Agent job. Thanks for your. Bad internal fragmentation (having lots of free space on the pages) means the index is bigger than it needs to be. Index Reorganize During Database Full Backup. However, the REBUILD still needs to take a lock for a moment to swap the old index for the new index.