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jagjeet.wordpress.com | ||
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www.dbi-services.com
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| | | | | Thanks to a multitenant container database, it allows to manage many databases as one taking advantage of resources consolidation. A perfect way to manage several applications in a single container. However are these plugglable databases that isolated as expected? Not exactly: As I will show in this posting, a single PDB can, under certain conditions, generate a complete system outage! | |
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andreynikolaev.wordpress.com
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| | | | | Oracle 11.2.0.2 contains enhancements 9282521 and 9239863 named Library cache: mutex X" for objects highly contended for. Part I and II. These enhancements introduce new interesting possibilities to tune some types of the mutex contention. Contention for heavily accessed objects can now be divided between multiple copies of object in the library cache. According to | |
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jarneil.wordpress.com
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| | | | | Ok, so everyone and their granny knows that the latest and greatest Critical Patch Update has appeared. But there are a couple of things that might be missed. First, I took out a documentation bug, bug number 6764071, on the last CPU. This was because Oracle stated at one point users in a RAC system... | |
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savvinov.com
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| | | In this post, I continue on the topic of examining SQL plans. I will talk about one DBMS_XPLAN function, DISPLAY_CURSOR (because it's probably the most useful one when troubleshooting ongoing performance issues, and also because other functions have a lot of similiarity to it). I will discuss frequently used options and some common problems. Preparation... | ||
