We're in the process of implementing Golden Gate. We've observed that by
default on 64bit systems Golden Gate wants 64GB of memory for cache. From
" Sets a soft limit for the amount of virtual memory (cache size) that is
available for caching transaction data. On 64-bit systems, the default is
64 GB "
Reserving 64G of ram for Golden Gate seems an extraordinarily large amount,
especially on a system where multiple GG processes might be running.
Similarly allowing this memory to swap out seems to rather negate the
purpose of a cache :). There's a repeated warning in the docs *not to
control this* without contacting Oracle Support for guidance. Our
engagement with Oracle Support hasn't exactly been stellar - they're happy
to look at individual cases, but general guidance isn't really in their
So, for folks out there using GG, do you set the CACHESIZE parameter to
control GG memory usage, if so how? Is it really on a case by case basis.
If not do you observe GG really using 64g ram for cache?