How to read large SQL Server ERRORLOG (the 5GB test)

Let’s take a look at different ways of reading the SQL Server ERRORLOG….I often come across large ERRORLOGS mainly because they are not being recycled frequent enough, or not at all. Sometimes, despite the frequent recycling, the ERRORLOG can grow to unmanageable size. This has recently happened to me during a large transaction rollback over Synchronous Availability Group. Within a few hours, the ERRORLOG log grew to 5GB in size due to “Sending page request for Undo” messages.

How to intelligently auto-cycle ERRORLOG using T-SQL

In my previous post, I described different ways to read very large SQL Server Log (ERRORLOG) – 5GB to be exact. However, this was a reaction to something that has already happened. In this post, I will show you how to prevent this from happening at all.