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Actually even not a blog. Just a notes I’ve made. For myself.
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Oracle x$ structures – notes I.
What are x$structures Oracle x$ tables are mapped in-memory C program structures. Views v$ are build upon them. You can check the mapping in $ORACLE_HOME/rdbms/admin directory. Poorly documented (see Resources) and changes almost every release. Some usefull x$tables: Shared pool monitoring with x$ksmlru and x$ksmsp.Listing of the RAM heap -> how free space is allocated within …
Walking through a thunderstorm.
Attending a mathematics lecture is like walking through a thunderstorm at night. Most of the time you are lost, wet and miserable but at rare intervals there is a flash of lightening and the whole countryside is lit up. Full text.