Sql Server 2012 R2 [patched] < Limited Time >

This guide gives you everything needed to operate SQL Server 2012 in a legacy environment while preparing to leave it.

There is no official "SQL Server 2012 R2." Microsoft released SQL Server 2012 (version 11.x) and SQL Server 2014 (version 12.x). The "R2" designation was used for Windows Server (2008 R2, 2012 R2) but never for SQL Server. This guide covers SQL Server 2012 SP4 (the final, most stable release). 1. Editions & System Requirements | Edition | Use Case | |---------|----------| | Enterprise | Mission-critical, large-scale OLTP, data warehousing, advanced HA | | Standard | Basic HA, BI, smaller apps (supports up to 64GB RAM, 16 cores) | | Express | Free, lightweight (max 10GB database, 1GB RAM, 1 core) | | Developer | Full Enterprise features, but licensed only for dev/test | | Web | Low-cost for web hosting companies | sql server 2012 r2

-- Blocking chains SELECT session_id, blocking_session_id, wait_type, wait_time FROM sys.dm_exec_requests WHERE blocking_session_id > 0; This guide gives you everything needed to operate