Hello Ingrid,
Ist there some way to trace / find out what exactly causes this?
Ingrid Voigt <giantpanda@xxxxxxx> hat am 26. März 2018 um 12:43 geschrieben:--
Oracle 11.2.0.4.171130 EE on Windows 64 Bit
We've been having problems with memory resize operations shrinking the buffer
cache
below specified limits:
Specified: 16GB db_cache_size, 3GB shared_pool_size, 20GB sga_max_size.
Changes to: approx. 3.5GB db_cache_size, 16GB shared_pool_size
This occurs about 2-3 times per month, usually after hours, severely
decreases database
performance and ends with a bounce of the database.
According to MOS 1269139.1 the resizes are expected behavior.
Ist there some way to trace / find out what exactly causes this?
(SQL, background process, other details of the root cause)
My customer is not willing to set _MEMORY_IMM_MODE_WITHOUT_AUTOSGA=false
and risk ORA-04031. If that changes, could one see something with a trace of
ORA-04031?
Thanks and best regards
Ingrid Voigt