Tag: troubleshooting

Keeping Cassandra Alive

Troubleshooting Cassandra Under Pressure This is the second blog post in the series. This is a bit more technical than the first one. I will explain some things that can be made to keep a cluster/server running when you are…

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Using the ILOM for Troubleshooting on ODA

I worked on root cause analysis for a strange node reboot on client’s Oracle Database Appliance yesterday. The case was quite interesting from the perspective that none of the logs contained any information related to the cause of the reboot….

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SQL Server and OS Error 1117, Error 9001, Error 823

Along with other administrators, life of us, the DBAs are no different but full of adventure.  At times, we encounter an issue which is very new for us, rather, one that we have not faced in the past.  Today, I…

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Unexpected Shutdown Caused by ASR

In past few days I had two incidents and an outage, for just a few minutes. However, outage in a production environment is related to cost relatively and strictly. The server that had outage was because of failing over and…

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SSAS– Resolving Target Machine Actively Refused

I’ve always wanted to get my hands on SSAS, SSIS and SSRS as I’ve often felt shorthanded in these areas. Yesterday I decided to play around with one of these and get my hands dirty – SSAS. A few months…

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Corollary to Tilton’s law: There only is the first problem.

Kenny Tilton posted about database troubleshooting, and he anecdotally illustrates and elaborates on a law of troubleshooting that I strongly agree with: Always solve the first problem. The corollary to his law is that “there only is the first problem.” I’m not sure I entirely agree with that one, but I will admit that that corollary is true at least 90% of the time, which is often enough to make it an incredibly useful insight.

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