OWB 11g Control Center Service Hanging During OWB ETL Processing With Mutex Waits (Doc ID 1316495.1)

Last updated on JANUARY 14, 2015

Applies to:

Oracle Warehouse Builder - Version 11.1.0.6 and later
Information in this document applies to any platform.
These errors are usually found on RAC (Real Application Clusters) systems but can be found in single server environments.


Symptoms


Slow running OWB ETL processing.

Running the AWR reveals:

Top 5 Timed Foreground Events
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Event waitsTime(ms)(ms)Avg wait % DB timewait class
           
DB CPU 9,967 56.6      
cursor: mutex S 12,508,473 2,607 0 14.8 Concurrence
direct path read 106,521 2,498 23 14.2 User I/O
library cache lock 34,980 610 17 3.5 Concurrence
direct path read temp 22,933 198 9 1.1 User I/O

Changes

None

Cause

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