"gc current block busy" wait in Concurrent BATCH Processes Run
- From: VIVEK_SHARMA <VIVEK_SHARMA@xxxxxxxxxxx>
- To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 13 Feb 2008 22:24:37 +0530
Folks
In a Benchmark Run, 256 concurrent BATCH Processes on RAC using Dedicated
Sessions (NON-MTS) showing the following Waits:-
How is the "gc current block busy" wait to be addressed?
From the Statspack Report (Level 7) which section gives the Objects which is
incurring this wait? Is it the "Segments By Current Blocks Received" section OR
the "Segments by CR Blocks Received" section?
Will share the Statspack Report, as needed.
Config:-
Oracle 10.2.0.3 on 3 Node RAC
Solaris 10
Cheers
Vivek
Statspack Report's Time Elapsed: 11.97 (mins)
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time
----------------------------------------- ------------ ----------- ------ ------
CPU time 5,854 57.6
gc current block busy 24,910 1,463 59 14.4
SQL*Net break/reset to client 1,075,218 1,285 1 12.6
gcs log flush sync 103,520 511 5 5.0
gc buffer busy 6,489 367 57 3.6
-------------------------------------------------------------
Host CPU (CPUs: 120)
~~~~~~~~ Load Average
Begin End User System Idle WIO WCPU
------- ------- ------- ------- ------- ------- --------
8.58 9.54
8.26 15.61 76.13 0.00 1.19
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