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New Metadata-Only Column Changes in SQL Server 2016

SQL Performance

Depending on the type of change and the configuration of the database, an ALTER COLUMN command will need to perform one of the following actions: Change metadata in system tables only. Improvements in SQL Server 2016. The subject of this post is the additional changes that are enabled for metadata-only from SQL Server 2016 onward.

Servers 63
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SQL 2016 – It Just Runs Faster: DBCC Scales 7x Better

SQL Server According to Bob

Internally DBCC CHECK* uses a page scanning coordinator design (MultiObjectScanner.) SQL Server 2016 changes the internal design to (CheckScanner), applying no lock semantics and a design similar to those used with In-Memory Optimized (Hekaton) objects, allowing DBCC operations to scale far better than previous releases.

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How It Works (It Just Runs Faster): Non-Volatile Memory SQL Server Tail Of Log Caching on NVDIMM

SQL Server According to Bob

SQL Server 2016 Service Pack 1 (all SKUs) , in combination with Windows Server 2016 (All SKUs) or Windows 10 Client introduces non-volatile memory support for the tail of the log file (LDF) which can significantly increase transaction throughput. Create / Alter Database … LOG ON. Tail Of Log Caching.

Cache 40
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SQL 2016 – It Just Runs Faster Announcement

SQL Server According to Bob

SQL Server 2016 ‘It Just Runs Faster’ A bold statement that any SQL Server professional can stand behind with confidence. Try SQL Server 2016 Today. You can take advantage of this effort packaged in SQL Server 2016. SQL 2016 supports 3X more physical memory than previous versions. – [link]. Follow-up.

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How It Works: SQL Server DTC (MSDTC and XA Transactions)

SQL Server According to Bob

Resource Manager – Database, File System, with ACID capabilities. SQLJDBC uses a slightly different design but again the SQL Server service does not change. Microsoft specific implementation for DTC using (OLE-TX). X/Open Standard for TM to RM communications and behavior. Transaction Monitor/Manager – Coordinator.

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