A client’s SQL Server 2016 Installation in Cluster hung at RunRemoteDiscoveryAction while setup ran discovery on the other node. Here is the cause of the delay.
SQL SERVER – Parallel Redo on AlwaysOn Secondary – DIRTY_PAGE_TABLE_LOCK
Redo lag and high DIRTY_PAGE_TABLE_LOCK waits hit a client’s AlwaysOn secondary. Here is how Parallel Redo in SQL Server 2016 causes them and what to do.
SQL SERVER – Steps to Deploy Distributed Availability Group – Windows Clusters in Different Domains
After a merger, a client had two Windows clusters in untrusted domains and no wish to use certificates. Here is how I deployed a Distributed Availability Group.
SQL SERVER – Error: 1067 – Unable to Bring Analysis Service Online in Cluster
A client could not bring the Analysis Service online in a cluster, and the logs only said Error 1067. Here is the systematic approach that found the cause.
SQL SERVER – AlwaysOn Automatic Seeding Failure – Failure_code 15 and Failure_message: VDI Client Failed
One database would not seed to the secondary replica. Here is how sys.dm_hadr_physical_seeding_stats showed failure_code 15 and VDI Client Failed.
SQL SERVER – Mirroring Error 1456 – The ALTER DATABASE Command Could not be Sent to the Remote Server Instance
Adding a new witness server after a disaster failed with database mirroring error 1456. Here is one possible cause and what to check.
SQL SERVER – AlwaysOn Automatic Seeding – Database Stuck in Restoring State
A client used AlwaysOn automatic seeding for a huge database, but it stayed in Restoring state on the secondary. Here is the reason we found.