Tuesday, June 19, 2007

Sybase MDA Tables

Monitoring tables (also known as MDA tables) are available in Adaptive Server version 12.5.x and later. So what does the MDA stand for "Monitoring Data Access” / “Monitoring and Diagnostics for ASE” / “Monitoring and Diagnostic Access" / “Monitoring and Diagnostic API. MDA tables are nothing but proxy tables in master database. There are approximately 35 mda tables. All starting with mon prefix. These tables can be accessed with regular SQL select statements. MDA tables provides low-level monitoring information which were not previously available like #logical I/Os for each process,SQL 'stacktrace' (stored proc/trigger call stack), cache usage details per table etc.

for more information on mda tables goto http://www.sybase.com or refer to Rob Verschoor web page - http://www.sypron.nl/main.html

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