The Reorganize Index task also includes an option to compact large object data. Faceți upgrade la Microsoft Edge pentru a profita de cele mai noi funcții, actualizări de securitate și asistență tehnică. The only difference is that I replaced the WAITFOR command (used to wait for the tuple mover to kick in) with an ALTER INDEX REORGANIZE statement. REORGANIZE. Starting with SQL Server 2016 (13. The new name for the index. Our Production instance is running SQL Server 2014. Oracle Databaseのインデックスの再作成・変更SQL「alter index」とそのポイントを紹介します。 「alter index」は各種メディアやブログで紹介されており、指定できるパラメータも多くあります。 この記事では初心者向けにインデックスを再作成・変更する時の重要なポイントも合わせて紹介します。 In earlier versions of Microsoft SQL Server it could cause system slowdown to reorganize or rebuild a large index. Index types. dm_db_index_physical_stats fincation have index_id which display heap and index informatiob. The index fragmentation level can be found using the sys. REORGANIZE, UPDATE STATISTICS and a simple SELECT statement. 1) Disable all NC indexes. resource_subtype, CASE WHEN resource_type =. If you want to rebuild an index the syntax is below: ALTER INDEX. Click the "Tablespaces" link. Here is the syntax of the ALTER INDEX Rebuilding index. An index cannot have an owner different from its table's owner. REORGANIZE index. Below the last two rows that displays the fail: Source: Reorganize Index Executing query "ALTER INDEX [Stack Exchange Network. REBUILD. Thanks for your. 1. It is documented that you can rebuild the index ONLINE for those indexes which has LOB columns as the index key. 여러 개의 행 그룹이 있는 테이블을 만든 다음, REORGANIZE가 행 그룹을 병합하는 방법을 보여 줍니다. if the index has: less than 5% logical fragmentation, don’t do anything; between 5% and 30% logical fragmentation, reorganize it (using DBCC INDEXDEFRAG or ALTER INDEX. " I'm modifying our index reorg/rebuild process to be sensitive to indexes that have ALLOW_PAGE_LOCKS turned OFF. Wednesday, December 26, 2012 - 3:13:45 PM - Christina: Back To Top (21140) I need to loop the following script through all databases. Question 1: Consider a scenario where you issue a full backup. When the. new_name. To re-sort data, use ALTER INDEX REBUILD. Is it possible to update a COLUMNSTORE index in a DB transaction? I would like to use the following SQL command inside transaction: ALTER INDEX [IX_Name] ON [dbo]. x) and later versions. In order to keep the fragmentation ratio of indices low, you should re-organize the indices from time to time on MSSQL. Beginning with SQL Server 2016 (13. any update on the old index will also get applied to the new index. Changing the table's owner automatically changes the index as well. If you run the query above, that gets information from the Dynamic Management Objects, and the index rebuild and reorganizations are running you will see information like this for the statement that is currently executing. There are scripts out there that will go though and reorganize verses rebuild versus skip. • ALTER INDEX REORGANIZE, But the user needs to use log space. ALTER INDEX ALL ON [Database_name]. This can be mitigated by regular maintenance of the columnstore index with ALTER INDEX REORGANIZE. Cancelling / Stopping ALTER INDEX REORGANIZE. The name (possibly schema-qualified) of an existing table to alter. #1258597. Next, let us build only the clustered index and see the output of all the indexes. REORGANIZE copies all the data from the source partition(s) into the destination partition(s). Expand the Indexes folder. The effect delivered is that REORGANIZE "conditions" a whole lot of indexes in such a fashion as to perpetuate page splits, which is both logical and physical (page density) fragmentation at its. a) Leave clustered indexes enabled - or you can't access the table. indexes) [allow_page_locks] is SET to 0. ALTER INDEX CCI_fact_Sale_CCI_ORDERED ON Fact. This job needs to be scheduled and ran on a weekly basis due to large data. Just for extra noise, Azure Backup is taking. REORGANIZE or REBUILD (as suggested already). The option for enabling the Rebuild Indexes is shown below –. Here is a sample script to reorganize any index in SQL Server. Specify the name of the maintenance plan. GO. #1637994. x), REORGANIZE solo se usa para comprimir los grupos de filas CLOSED en el almacén. (About 1 TB of data including myIndex (non-clustered)). ALTER INDEX CCI_TEST on DBO. In the query window, paste the WSUSDBMaintenance script (T-SQL script) and click Execute. In short, the new Merge functionality in INDEX REORGANIZE simplifies Columnstore index maintenance significantly and other DMV’s add visibility into the internals of columnar indexes. Rebuilding an Index. Starting with SQL Server 2016 (13. IndexOptimize is supported on SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014, SQL Server 2016, SQL Server 2017, SQL Server 2019, SQL Server 2022, Azure SQL Database, and Azure SQL. partition_number The number of an existing index partition to rebuild/reorganize. 1 million rows in 11. 2 – Two minutes later, a background task is blocked by the index reorganize, waiting to acquire a schema modification lock to update the statistics for the same index. or to reorganize use: ALTER INDEX __NAME_OF_INDEX__ ON __NAME_OF_TABLE__ REORGANIZE. Hi, if you need to set a different fillfactor for a specific group of tables I think you could duplicate your existing script to manage two different sets of tables, the first to set for example. Rebuild INDEX sort in tempdb. Share. Sorted by: 1. Index_Name REORGANIZE Umarım sizler için faydalı bir döküman olmuştur. Acest browser nu mai este acceptat. The per-row group state of the delete bitmap can be seen in the sys. This is a best practice for performance when you rebuild or reorganize indexes. You don’t. To re-sort data, use ALTER INDEX REBUILD. To reduce the number of fragments, reorganize the full-text catalog by using the REORGANIZE option of the ALTER FULLTEXT CATALOGTransact-SQL statement. 1. ドメイン索引を変更する場合は、索引の索引タイプに対してexecute. In ONLINE mode the new index is built while the old index is accessible to reads and writes. Regards Echo ALTER INDEX is in fact just an alias for the forms of ALTER TABLE that apply to indexes. For example, if a given index is used mainly for scan. Copy and paste the following example into the query window and select Execute. 277 4 4 silver badges 12 12 bronze badges. What is index fragmentation, and why is it a concern?Index fragmentation occurs when data pages within an index are disordered or scattered. Also, in earlier versions the granularity of control was less refined. The index uses no dictionary: primary_dictionary_id and secondary_dictionary_id are -1 for all segments. An antimatter column is used to track possible conflicts between the updates and the rebuild (ie. _depth, index_level). がレンジ・パーティションまたはハッシュ・パーティションである. The MAXDOP index option cannot be specified in the ALTER INDEX REORGANIZE statement. Parallel index execution and the MAXDOP index option apply to the. The deleted leaf rows should be less than 20%. The index can be reorganized using ALTER INDEX REORGANIZE T-SQL command. Team, My Rebuild,Reorganize index job has been failing because of the following error,it is scheduled to be executed in only one db and the db is in simple mode. The name (possibly schema-qualified) of an existing index to alter. [TableName] REBUILD GO-- Check that only clustered index is enabled SELECT OBJECT_NAME (OBJECT_ID), Name, type_desc, is_disabled FROM. Also, since this is a non-clustered index, you could drop and then create the index. ALTER INDEX ALL ON [table_name] REORGANIZE; However, if you want to rebuild all the indexes on the. This can slow down query performance as SQL Server needs to read more pages to satisfy a query. Rebuild the index. REBUILD. ALTER INDEX. Disable the index. Querying sys. 2. The DBCC command is a consistency checker utility inside of SQL Server whereas ALTER is a DDL SQL command. a) if possible. Expand the database table on which you want to rebuild the index online. In fact, if an index is UNUSABLE the truncate will actually mark it as USABLE by the very fact that it knows there are no rows. You can do maintenance in phases, where each maintenance phase covers a subset of. Microsoft's guidance on index reorganize and rebuild supports this: For example, if a given index is used mainly for scan operations, removing fragmentation can improve performance of these operations. 2) You cannot rebuild an entire partitioned index. ALTER INDEX [myIndex] ON [dbo]. Because this is an online operation, the index is available while the statement is running. 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. ALTER INDEX. To re-sort data, use ALTER INDEX REBUILD. Since ONLINE rebuild is not an oprion for you (Enterprise only and you are on Standard), ALTER INDEX. however, if we disable the index , rebuild with compression and then rebuild again: alter index IX1 on DBO. In the infrequent cases where you do need to reorganize or re-build index, consider these: Run index maintenance during off peak period. 4. ALTER INDEX . On this MSDN Page it says if you should reorganize or rebuild based on the amount of fragmentation: 5% to 30% -> ALTER INDEX REORGANIZE Over 30% -> ALTER INDEX REBUILD WITH (ONLINE = ON)* However, we have noticed that even with really high fragmentation (over 95%) on large and small tables, REORGANIZE works fine. 1 Answer. These values provide a rough guideline for determining the point at which you should switch between ALTER INDEX REORGANIZE and ALTER INDEX REBUILD. ". Applies to: SQL Server 2012 (11. Microsoft describes in the link below how you can check the fragmentation of indices on tables in MSSQL and then how you can re-organize (re-build) the indices to reduce the fragmentation percentage:Rebuild is an ALTER command so even if the job is running the step is trying to execute the plan which has that command in the logic and failing. The script below allows you to rebuild indexes for all databases and all tables within a database. x), REORGANIZE is only used to compress CLOSED rowgroups into the columnstore. From Reorganize and Rebuild Indexes. Since ONLINE rebuild is not an oprion for you (Enterprise only and you are on Standard), ALTER INDEX. 例えば、10 % 以上 30 % 未満であれば再構成 (Reorganize)、 30% 以上であれば再構築 (Rebuild) するとすれば、上記の. Qualification Limit for REORGANIZE to remove deleted rows from a rowgroup in Columnstore Index: By default when one runs ALTER INDEX REORGANIZE the qualifying limit to remove delete rows from a rowgroup is --> the specific rowgroup have 10% of the max possible rows in a rowgroup deleted. Unlike REORGANIZE on user tables, REORGANIZE on a queue is always performed as an offline operation because page level locks are explicitly disabled on queues. I don't agree with Kin this is a knee response that will be a least help. When investigating we found that the index reorganise for the clustered index of FooDetail takes between 90 minutes and 120 minutes. The fix is to update all rebuild index scripts. indexes Ok i am confused, i was replacing my "alter index reorganize" part with the "execution dbo. 1 additional answer. below line will remove the NULL value from the query. REORGANIZE is your option. Please see this below chart for lock compatibility:. The reorganize process reorganizes the leaf nodes of the index physically to match it with the logical order, this physical order matching the logical order improves the performance of index scans. Modify an existing index on a table or view. [User] REBUILD [SQLSTATE 01000] (Message 0) Executed: ALTER INDEX [IX_myUser_UserID] ON [my]. Rebuild Indexes. It is causing other queries to wait, even simple ones like: SELECT * FROM tableName WHERE indexedColumn = @value. Compressed rowgroups - Rowgroups are using columnstore compression. If the clustered index is being rebuilt, an exclusive table lock is held. If index is range-partitioned or hash-partitioned, then Oracle Database deallocates unused space from each index partition. However, the actual values may vary from case to case. x), REORGANIZE hanya digunakan untuk memadatkan grup baris TERTUTUP ke dalam penyimpan kolom. And if the reorganize is a deadlock. Large tables should be in their own full-text catalog. Compaction is based on the existing fill. It rebuilds a spatial index or a specified partition of a partitioned index. Expand the Indexes folder. 常にオンラインで実行されます。 つまり、alter index reorganize トランザクション中は、長期にわたって他をブロックするテーブル ロックは保持されず、基になるテーブルへのクエリまたは更新を続行できます。 無効なインデックスに対しては指定できません。 Open Object Explorer & expand the database containing the table you wish to reorganize. (I sometimes find that people are doing both against every index in a maintenance plan. You can also change this threshold via parameters. The following index operations require no additional disk space: ALTER INDEX REORGANIZE; however, log space is required. PARTITION Only rebuild/reorganize one partition of the index. To create SQL database maintenance plan, launch SQL Server Management Studio > expand the database instance > Management > right-click on the maintenance plan > New Maintenance Plan. column_name DISABLE; ALTER INDEX index_name ON table_name. They work differently toward the same end. Before you execute the query you can disable the background tuple mover task by using the trace flag 634. Columnstore supports index defragmentation by removing deleted rows without the need to explicitly rebuild the index. Example: 3. Generates the error…. Is this possible to do?Unlike DBCC INDEXDEFRAG, or ALTER INDEX with the REORGANIZE option, DBCC DBREINDEX is an offline operation. TEST REORGANIZE WITH (COMPRESS_ALL_ROW_GROUPS = ON) With very large indexes, rebuilds take longer, generate more log, impact performance more while they’re running. DBCC SHRINKDATABASE(WorldOfHurt, 1); And it’ll reorganize the pages in the WorldOfHurt to leave just 1% free space. REORGANIZE is your option. indexstats. BOL: " Reorganize and Rebuild Indexes This topic describes how to reorganize or rebuild a fragmented index in SQL Server 2012 by using SQL Server Management Studio or Transact-SQL. Sale_CCI_ORDERED REORGANIZE;. [Table_Name] REBUILD OR - to rebuild all the indexes in the table. Resolve SQL Server Database Index Reorganization Page Level Locking Problem. Run this command: 1. There is all reason to only rebuild index that are fragmented, and a good maintenance. There was formerly an ALTER INDEX OWNER variant, but this is now ignored (with a warning). Using this script, I receive an error. Ok i am confused, i was replacing my "alter index reorganize" part with the "execution dbo. To create a table. I used the sp_who2 procedure to see which queries were waiting, and which other query they were blocked by. Shrinks AdventureWorks2014 to have 50% free space, runs shrinks in 25MB. If ONLY is specified, only that table is altered. -Search all indexes of a table that have 5% or more of fragmentation and page_count >= 1000. To rebuild an index means to create anew one, then drop the old one. 13. Reorganizing also compacts the index pages. Indexes and ALTER TABLE. If ONLY is not specified, the table and all of its descendant tables (if any) are updated. REORGANIZE instead of REBUILD. Each row is 200 bytes long. We choose "All databases, leave the default values of two other options and click "OK". It defragments the leaf level of clustered and nonclustered indexes on tables and views by physically reordering the leaf-level pages to match the. Reorganize has some advantages and disadvantages, due to the way it works… and it works completely different compared to the index rebuild operation. For the first question: Yes, when you change the CLUSTERED INDEX, it means that the data will be rearranged. All other index DDL operations require additional temporary disk space to use during the operation, and permanent disk space to store the. Click the plus sign to expand the table on which you want to rebuild an index online. It is a more online-ish compared to rebuild. This prevents modifications to the table. Select Allow online DML processing, and choose True from the list, and then click OK. DROP INDEX when you are dropping a nonclustered index. The statement can also merge two partitions into. alter index reorganize を実行すると、lob_compaction の有無に関係なく、並列処理の最大限度の値は単一スレッドの操作になります。 詳細については、「 並. Yes. In this article. A more intelligent way is to check fragmentation first then rebuild or reorganise. Let’s use DBCC SHRINKDATABASE to reclaim the empty space. too slow alter index reorganize/rebuild (with online) I have 2 similar SQL Server installations on 2 similar GCP projects. For all of the column statistics on a partitioned table with a clustered columnstore index, you can just do a one-time conversion by doing something like: SQL. There's a difference between REORGANIZE and REBUILD. These commands only require a single 8KB page of extra space, instead of needing to build a whole new index in the case of an index rebuild operation (which will likely cause the file. Rebuilding indexes is done using the following statement. x), you can create nonclustered B-tree or rowstore indexes as secondary indexes on a clustered columnstore index. Syntax: ALTER INDEX [ IF EXISTS ] name RENAME TO new_name ALTER INDEX [ IF EXISTS ] name SET TABLESPACE tablespace_name ALTER INDEX [ IF EXISTS ]. In order to complete they need a very high level of lock: a schema modification lock (SCH-M). Expand the Indexes folder. This ALTER FULLTEXT INDEX statement starts a full population, which is the default behavior of the SET SEARCH PROPERTY LIST clause. ALTER INDEX. If index is a local index. ALTER INDEX [PK_FooDetail] ON [DbName]. その他のすべての句は無効です。. Also, an interesting point is that only the leaf level (level=0) gets defrag'ed after doing an ALTER INDEX REORGANIZE - BOL makes this clear. 000). ) of an existing index, but it doesn't allow changes to the columns that make up the index. 그러므로 파일. ALTER INDEX IXCS_Test ON [DBTest]. Cancelling / Stopping ALTER INDEX REORGANIZE. REORGANIZE also optimizes internal index and catalog structures. It is important that you experiment to determine the best threshold for your environment. Index Reorganize is a useful operation when your fragmentation is below 20-30 %, you do not need to change the original fill factor of your index and you are planning on doing index statistics update at a later point in time. [Product] SET ( ALLOW_PAGE_LOCKS = ON ) ALTER. There were questions regarding which indexes are actually rebuild touched and what are not. The code first adds 1. Below is an example of this technique, where the @PartitonNumber value can be changed in a restart scenario. In this article. First off: ‘Reorganize’ and ‘Rebuild’ are two different operations that each reduce fragmentation in an index. (You could even go with 0% if you want. Rebuilding an index drops and re-creates the index. Particularly if you are in full recovery. Use ALTER INDEX REORGANIZE, the replacement for DBCC INDEXDEFRAG, to reorder the leaf level pages of the index in a logical order. 15. alter index reorganize を使用してこれらの行グループを列ストアに強制的に変換した後、小さい圧縮された行グループを、より大きい圧縮された行グループに結合できます。 再構成操作では、削除対象としてマークされた行も、列ストアから削除されます。1 – Index reorganize starts from a SQL Agent job. REORGANIZE command (more details on this command and its usage are given below). SQL Agent doesn't connect as SA, and the rebuild index task generates a command that looks like ALTER INDEX [ci_FactInternetSales] ON [dbo]. TABLE. Table Options. The drawback in this. In PostgreSQL, ALTER INDEX command changes the definition of an existing index. This example demonstrates how the ALTER INDEX REORGANIZE command works. fragment_count : Number of fragments in an index (Continuous Pages) - Lower value is better 3. If you have any question, please feel free to let me know. Expand the Indexes folder. Recall the paper example from above: a rebuild would be like reprinting the document in the correct order and trashing the old ones. その他のすべての句は無効です。. The Reorganize Index task encapsulates the Transact-SQL ALTER INDEX statement. Divides indexes in categories, and performs the default operations on each category: Indexes with low fragmentation (fragmentation is less than 5%) – No maintenance operations are performed; Indexes with medium fragmentation (fragmentation ranges between 5% and 30%) – The procedure will first attempt to reorganize indexes. Points: 90153. More actions . One of the major reasons I wrote DBCC INDEXDEFRAG for SQL Server 2000 was as an online alternative to DBCC DBREINDEX. Here is the syntax for the same. 2) The second step is to completely drop the table from the database. Since it involves p_first and that partition is huge, it takes a long time, and locks the table. 2 Answers. 3) You cannot also specify the deallocate_unused_clause in this statement. If the clustered index is being rebuilt, an exclusive table lock is held. If the response is helpful, please click "Accept Answer" and upvote it. [myTable] REORGANIZE WITH ( LOB_COMPACTION = ON ) I have the above query running for 16 days (still running),. REORGANIZE) more than 30% logical fragmentation, rebuild it. INDEXDEFRAG = defragments page by page. ALTER INDEX index1 ON dbo. I don't agree with Kin this is a knee response that will be a least help. REORGANIZE statement removes deleted rows, based on an internally defined policy, from the columnstore as an online operation. It. indexes I LEFT OUTER JOIN sys. Script and result below: ALTER INDEX ALL ON Fragmented REORGANIZE GOExpand the SolarWinds database and find the table or tables indicated in the message. I already tried an ALTER INDEX REORGANIZE just in case. ----- This article - Optimize index maintenance to improve query performance and reduce resource consumption helps you decide when and how to perform index maintenance. It reorgs indexes when fragmentation is below 30% else it rebuild the index. Under Select a page, select Options. ALTER INDEX Index_Name ON Sales. table_options signifies table options of the kind that can be used in the CREATE TABLE statement, such as ENGINE, AUTO_INCREMENT, AVG_ROW_LENGTH, MAX_ROWS, ROW_FORMAT, or TABLESPACE. Rebuild the Indexes if the Fragmentation level is > 30%. Therefore, you do not need to update statistics after performing ALTER INDEX REBUILD, DBCC DBREINDEX, DBCC INDEXDEFRAG, or ALTER INDEX REORGANIZE operations. The syntax for rebuilding indexes is very simple, we just add the "WITH ONLINE=ON" clause to the ALTER INDEX command. Recreate the specified index. 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. Reorganize Doesn`t Create A New Index It is again a short demo which shows that Reorganize doesn`t create a new Index, In this demo we will reorganize the index and we will check does the Index ObjectID and PageIDs changed in comparewith the last demo. Like the tests above the initial start point is as per the second screenshot above. Next, let us build only the clustered index and see the output of all the indexes. Your new index will have the size non less than the size of disabled index. The first rebuilds a single index on a table and the second rebuilds all the indexes on the table. For the 'best possible' results REBUILD offline, with MAXDOP = 1, and SORT_IN_TEMPDB = ON. Indexes with small number of pages (<1000) will usually. ALTER INDEX All ON tableName REORGANIZE; Rebuild or Reorganize SQL Index. 13. Note In SQL Server 2012 (11. ) REORGANIZE statement. The tablespace to which the index will be moved. I manually fired reorganize index (ALTER INDEX cci_myindex ON dbo. Here is the script which we used to rebuild the indexes in the TempDB. ALTER INDEX TableDetails_UK0 ON TableDetails REBUILD WITH ( PAD_INDEX=OFF, SORT_IN_TEMPDB=ON. I got no errors, but I still have fragmentation. Because the data_compression option is not retained when scripting out the Index create statement. SQL Server 2016 allows customer to defragment this index using the familiar ALTER INDEX <index-name> REORGANIZE command instead of using a heavy hammer approach of rebuilding the index. This form of REINDEX cannot be executed inside a transaction block. If the SQL Server crashes and if all the differential backups are bad, when is the latest point in time. SalesOrderHeader SET ( STATISTICS_NORECOMPUTE = ON, IGNORE_DUP_KEY = ON, ALLOW_PAGE_LOCKS = ON ) ; To modify index columns To add, remove, or change the position of an index column, you must drop and recreate the index. DBREINDEX = REBUILD option "Rebuilding Indexes" +in this link. [GerardStatsTest] WITH RESAMPLE, INCREMENTAL=ON; This will make all of the statistics incremental statistics. From the documentation: “When a clustered index is dropped OFFLINE, only the upper levels of clustered indexes are removed; therefore, the operation is quite fast. 1 million rows in 11. For more information on ordered clustered columnstore indexes, see Performance tuning with ordered clustered columnstore index. You must rebuild each partition or subpartition. indexoptimize" within my script that iteratates through the for me relevant tables, job seems to be. Reorganize the index. The table has an NVARCHAR (MAX) column. To re-sort data, use ALTER INDEX REBUILD. . Reorganizing an index does not update associate statistics. [FooDetail] REORGANIZE WITH (LOB_COMPACTION = ON) Extend event info: SQL Server 2017 provides a key feature Resumable Online Index Rebuilds. An index rebuild will always build a new index, even if there’s no fragmentation. So let's say AdventureWorks2014 was 1GB and it's using 100MB space. table1 REBUILD WITH (SORT_IN_TEMPDB = ON); however I find the datafile still grow up many on the current filegroup. We are seeing an issue wherein millions of records are deleted from the tables that have column QUERY_BLOB(data type ntext), but the table usage is still the same. m. . Dedicated SQL pool offers several indexing options including clustered columnstore indexes, clustered indexes and nonclustered indexes, and a non-index option also known as heap. > 30% ALTER INDEX REBUILD WITH (ONLINE = ON)*. Henrik Høyer. REORGANIZE ), so that’s the topic for this post. Also, some tables/indexes will hardly be fragmented. There is a similar case for your reference: Check progress of alter index reorganize / rebuild. Note: One thing ALTER INDEX does not allow you to do is change the set of columns that comprises the. ALTER INDEX All ON tableName REBUILD; This drops the index and recreates it, removing fragementation, reclaims disk space and reorders index pages. ----- This article - Optimize index maintenance to improve query performance and reduce resource consumption helps you decide when and how to perform index maintenance. [TBLTest] REBUILD WITH (MAXDOP = 2) This statement executes successfully without errors but again, when I check the properties of the index it's still at 0. Right-click the index you want to reorganize and select Rebuild. One can also. allow_page_locks = 0 AND T. In this example, first, I’ll create a new non-clustered index by specifying ONLINE, RESUMABLE, and a MAXDOP of two. In PostgreSQL, ALTER INDEX command changes the definition of an existing index.