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Kernel panic – not syncing: Out of memory and no killable processes

By Franck Pachot . This is a quick post to give a solution (maybe not the best one as this was just quick troubleshooting) if, at boot, you see something like: Trying to allocate 1041 pages for VMLINUZ [Linux=EFI, setup=0x111f, size=0x41108d01] and then: Kernel panic – not syncing: Out of memory and no killable processes Pid: 1228 comm: kworker Not… 

Columnstore index rebuild cannot start

A couple of weeks ago, I was charged to migrate an SQL Server datawarehouse environment to a more recent version of SQL Server (from 2005 to 2012 in my case). After discussing with my customer we decided to benefit from the nonclustered columnstore index feature to improve reporting queries performance directly executed against the concerned database. So the implementation was… 

SQL Server & memory leak: Are you sure?

I have recently come across an issue with one of my customer that told me that their SQL Server 2008 R2 instance had a memory leak. These are strong words! The server has 64 GB of RAM and the concerned SQL Server instance is limited to 54 GB according to the max server memory (GB) server option. However, he noticed… 

Understanding JVM Java memory leaks

Lots of people think that Java is free of memory management as the JVM uses a Garbage Collector. The goal of this collector is to free objects that are no longer used in the program without the developer being forced to declare that the object can be collected. Everything is automatic. It’s really helpful and it avoids wasting time in…