Usefull DMV's

Dynamic Management Views and Functions (Transact-SQL) SQL Server 2014 Other Versions 5 out of 5 rated this helpful - Rate this topic Dynamic management views and functions return server state information that can be used to monitor the health of a server.

https://gallery.technet.microsoft.com/Usefull-DMVs-14b6bb92

SQL Server 2012 Instalation

https://gallery.technet.microsoft.com/SQL-Server-2012-Instalation-fcf5fb9e

DataCompression_Scripts and Steps

Database Compression document enclosed. This will do only page level compression if we run the scripts as it is mentioned in the document.If we need to do the ROW level compression please change the script, Just remove the commets where i have commented for the ROW.

https://gallery.technet.microsoft.com/DataCompressionScripts-and-40780587

Backup Details Scrpit _Power shell

Download script will provide the backup details in a csv format.

https://gallery.technet.microsoft.com/Backup-Details-Scrpit-6bb5de67

To Find Lead Blocking - Use Below Query

This will list out the lead blocker spid, based on this we can ask our application teams take decision to kill or not. This will be used in day to day basis when ever application team reports hampering performance or complaining the time taken to process is longer than the usual.

https://gallery.technet.microsoft.com/Lead-Blocking-Query-df3f0e21