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Garbage collector tasks activated <count> times, currently active: <number>

Garbage collector tasks activated <count> times, currently active:<number>, physical reads: <number> (<number_of> pages), avg read time: <duration> ms

Garbage collection deleted <number_of> objects and <number_of> history objects, amount of history pages now: <number>

 

Explanation

See FAQ 1247666.

 

User Response

If the number of history pages increases considerably and the storage space is not released quickly enough, a bottleneck may occur. Then it might be necessary to increase the number of garbage collectors. This is usually not a problem for OLTP systems but only for liveCache.
 

More Information

Relevant  DB-Analyzer Files
Helpful with ...
DBAN_GC.csvProvides detailed information about garbage collector task activities. 
DBAN_FILLING.csvFind information about temporarily used pages.
SAP Note
 
1247666 - FAQ: SAP MaxDB/liveCache History Pages  
Expert Sessions (Link to trainings)
Content / Helpful with ...
Session 10: SAP MaxDB LoggingFind some information about the concept of undo files in OLTP systems.
Documentation (Links)
Helpful with ...
  

                            

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