Cumulative Update 12 for SQL Server 2017

Applies to: SQL Server 2017 on Windows (all editions)SQL Server 2017 on Linux (all editions)

This article describes Cumulative Update package 12 (CU12) (build number: 14.0.3045.24) for SQL Server 2017. This update contains fixes that were released after the initial release of SQL Server 2017.

This article also provides important information about the following situations:

Cumulative update

Cumulative updates (CU) are now available at the Microsoft Download Center.

Only the most recent CU that was released for SQL Server 2017 is available at the Download Center.

CU packages for Linux are available at https://packages.microsoft.com/.

Notes

  • Each new CU contains all the fixes that were included with the previous CU for the installed version of SQL Server.
  • SQL Server CUs are certified to the same levels as Service Packs, and should be installed at the same level of confidence.
  • Microsoft recommends ongoing, proactive installation of CUs as they become available according to these guidelines:
     
    • Historical data shows that a significant number of support cases involve an issue that has already been addressed in a released CU.
    • CUs may contain added value over and above hotfixes. This includes supportability, manageability, and reliability updates.
  • We recommend that you test CUs before you deploy them to production environments.
 

How to obtain this cumulative update package for Windows


The following update is available from the Microsoft Download Center:
 
If the download page does not appear, contact Microsoft Customer Service and Support to obtain the cumulative update package.

Note After future cumulative updates are released for SQL Server 2017, this and all previous CUs can be downloaded from the Microsoft Update Catalog. However, we recommend that you always install the latest cumulative update that is available.

How to obtain this cumulative update package for Linux


To update Linux to the latest CU, you must first have the Cumulative Update repository configured. Then, update your SQL Server packages by using the appropriate platform-specific update command.

For installation instructions and direct links to the CU package downloads, see the release notes.

Additional hotfixes that are included in this cumulative update package


VSTS bug number KB article number Description Fix area Platform
12229849 4345524 FIX: Create and update don’t work in an entity when you set Read and Create permission in MDS 2017 Data Quality Services (DQS) Windows
12352667 4462426 FIX: Error occurs when you change the "Display value" of "Name" attribute of an entity to any value other than "Name" in SQL Server 2017 MDS Add-in for Excel

Data Quality Services (DQS)

Windows
12321033 4462481 FIX: Query operation freezes when you insert data into a clustered columnstore index in parallel in SQL Server data warehousing SQL performance Windows
12342954 4463757 FIX: "Encryption not supported on the client" error when a SQL Server 2017 linked server query fails SQL connectivity  Windows
12296279 4465204 FIX: An intra-query deadlock occurs in a query containing UNION ALL in batch mode in SQL Server SQL performance Windows
12359904 4465236 FIX: Access violation occurs in compile code when you parse the forced plan in SQL Server 2017 SQL Engine Windows
12392563 4465248 FIX: “An unexpected exception occurred” in an MDX query for PC dimensions in SSAS 2017 Analysis services Windows
12363625 4465247 FIX: Deadlock occurs in SSAS 2017 when you run a DAX query with time intelligence calculation in parallel Analysis services Windows
12362293 4459220 FIX: Incorrect results occur when you convert "pollinginterval" parameter from seconds to hours in sys.sp_cdc_scan in SQL Server 2014 and 2016 SQL Engine Windows
11967433 4465745 FIX: Assertion error occurs when you run a MERGE statement with an OUTPUT clause in SQL Server 2017 SQL Engine Windows
12409366 4465832 FIX: Rebuilding an Index with Resumable Online Index Rebuild can result in a fragmented index in SQL Server 2017 SQL Engine Windows
12366825 4466108 FIX: Backing up a SQL Server 2008 database by using a VSS backup application may fail after installing CU10 for SQL Server 2017 SQL Engine Windows
12428685 4466962 FIX: SQL Server 2017 crashes unexpectedly when you use third-party Active Directory providers SQL Engine Linux
12403785 4467074 Update disables trace flag 2467 at session level to prevent a performance issue for parallel queries in SQL Server 2017 SQL performance All
12357735 4468103 FIX: Access violation occurs in Distribution Agent in SQL Server 2017 SQL Engine Windows
12342904 4468102 FIX: Excessive memory usage when you trace RPC events that involve Table-Valued Parameters in SQL Server 2017 SQL Engine All
12186149 4468101 Improvement: Optional replacement for “String or binary data would be truncated” message with extended information in SQL Server 2017 SQL Engine All
12342475 4469140 FIX: "Could not find server" when the publisher database name contains a period in SQL Server 2017 SQL Engine All

Notes for this update


Hybrid environments deployment

When you deploy an update to a hybrid environment (such as AlwaysOn, replication, cluster, and mirroring), we recommend that you refer to the following articles before you deploy the update:
 

Cumulative update package information


Prerequisites

To apply this cumulative update package, you must be running SQL Server 2017.

Restart information

You may have to restart the computer after you apply this cumulative update package.

Registry information

To use one of the hotfixes in this package, you do not have to make any changes to the registry.

More CU package information


Pacemaker notice


IMPORTANT

All distributions (including RHEL 7.3 and 7.4) that use the latest available Pacemaker package 1.1.18-11.el7 introduce a behavior change for the start-failure-is-fatal cluster setting when its value is false. This change affects the failover workflow. If a primary replica experiences an outage, the cluster is expected to failover to one of the available secondary replicas. Instead, users will notice that the cluster keeps trying to start the failed primary replica. If that primary never comes online (because of a permanent outage), the cluster never fails over to another available secondary replica.

This issue affects all SQL Server versions, regardless of the cumulative update version that they are on.

To mitigate the issue, use either of the following methods.

Method 1

Follow these steps:

  1. Remove the start-failure-is-fatal override from the existing cluster. 
       # RHEL, Ubuntu         pcs property unset start-failure-is-fatal         # or         pcs property set start-failure-is-fatal=true   # SLES         crm configure property start-failure-is-fatal=true
  2. Decrease the cluster-recheck-interval value. 
       # RHEL, Ubuntu         pcs property set cluster-recheck-interval=<Xmin>   # SLES         crm configure property cluster-recheck-interval=<Xmin>
  3. Add the failure-timeout meta property to each AG resource. 
       # RHEL, Ubuntu         pcs resource update ag1 meta failure-timeout=60s   # SLES         crm configure edit ag1      # In the text editor, add `meta failure-timeout=60s` after any `param`s and before any `op`s
     

    Note In this code, substitute the value for <Xmin> as appropriate. If a replica goes down, the cluster tries to restart the replica at an interval that is bound by the failure-timeout value and the cluster-recheck-interval value. For example, if failure-timeout is set to 60 seconds and cluster-recheck-interval is set to 120 seconds, the restart is tried at an interval that is greater than 60 seconds but less than 120 seconds. We recommend that you set failure-timeout to 60s and cluster-recheck-interval to a value that is greater than 60 seconds. Setting cluster-recheck-interval to a small value is not recommended. For more information, refer to the Pacemaker documentation or consult the system provider.


Method 2

Revert to Pacemaker version 1.1.16.

    Query Store notice


    IMPORTANT

    If you use the Query Store feature, and you have previously installed Cumulative Update 2 (CU2) (14.0.3008.27), the following requirement applies to you:

    After you install Cumulative Update 3 (CU3) (14.0.3015.40) or a later CU, you must immediately run the following script to delete all plans that were collected by Query Store while CU2 was installed:

    SET NOCOUNT ON;DROP TABLE IF EXISTS #tmpUserDBs;SELECT [database_id], 0 AS [IsDone]INTO #tmpUserDBsFROM master.sys.databasesWHERE [database_id] > 4 AND [state] = 0 -- must be ONLINE AND is_read_only = 0 -- cannot be READ_ONLY AND [database_id] NOT IN (SELECT dr.database_id FROM sys.dm_hadr_database_replica_states dr -- Except all local Always On secondary replicas  INNER JOIN sys.dm_hadr_availability_replica_states rs ON dr.group_id = rs.group_id  INNER JOIN sys.databases d ON dr.database_id = d.database_id  WHERE rs.role = 2 -- Is Secondary   AND dr.is_local = 1   AND rs.is_local = 1)DECLARE @userDB sysname;WHILE (SELECT COUNT([database_id]) FROM #tmpUserDBs WHERE [IsDone] = 0) > 0BEGIN SELECT TOP 1 @userDB = DB_NAME([database_id]) FROM #tmpUserDBs WHERE [IsDone] = 0 -- PRINT 'Working on database ' + @userDB EXEC ('USE [' + @userDB + '];DECLARE @clearPlan bigint, @clearQry bigint;IF EXISTS (SELECT [actual_state] FROM sys.database_query_store_options WHERE [actual_state] IN (1,2))BEGIN IF EXISTS (SELECT plan_id FROM sys.query_store_plan WHERE engine_version = ''14.0.3008.27'') BEGIN  DROP TABLE IF EXISTS #tmpclearPlans;  SELECT plan_id, query_id, 0 AS [IsDone]  INTO #tmpclearPlans  FROM sys.query_store_plan WHERE engine_version = ''14.0.3008.27''  WHILE (SELECT COUNT(plan_id) FROM #tmpclearPlans WHERE [IsDone] = 0) > 0  BEGIN   SELECT TOP 1 @clearPlan = plan_id, @clearQry = query_id FROM #tmpclearPlans WHERE [IsDone] = 0   EXECUTE sys.sp_query_store_unforce_plan @clearQry, @clearPlan;   EXECUTE sys.sp_query_store_remove_plan @clearPlan;   UPDATE #tmpclearPlans   SET [IsDone] = 1   WHERE plan_id = @clearPlan AND query_id = @clearQry  END;  PRINT ''- Cleared possibly affected plans in database [' + @userDB + ']'' END ELSE BEGIN  PRINT ''- No affected plans in database [' + @userDB + ']'' ENDENDELSEBEGIN PRINT ''- Query Store not enabled in database [' + @userDB + ']''END')  UPDATE #tmpUserDBs  SET [IsDone] = 1  WHERE [database_id] = DB_ID(@userDB)END