A while back, I posted an article about creating a WhiteList for access to SQL Server. Since then I have received a bit of feedback that it was not working as designed. My apologies for taking so long, but I believe I have come up with a fix. The main issue is the trigger will block some or even all access to the server after it’s created. As it turns out, the issues were really permission being denied. To see it in action, let’s create everything using the original code from here. We’ll add 1 row to the WhiteList table...
Continue reading...May 2017
Dear McAfee, Why are you destroying my buffer pool?
For the past few months, one my customers had been trying to diagnose an issue with SQL Server paging out the entire buffer pool each morning around 8AM. See the error below. Not only was this causing some serious performance issues, but it was also affecting every SQL Server in the environment. I began my investigation with the standard troubleshooting techniques for buffer pool paging. One of the main workarounds that’s recommended is to enable the “locked pages in memory” permission for the SQL Server service account; however, this was not possible for this customer. Enabling that permission would violate...
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