We have a standby DB in a DR server open for read only. A user wants to be
able to pull the data in the server in some schemas (call them schemaA,
schemaB) and want to write data in other schemas (say schemaX, schemaY)
after manipulation.
Without replication ($$), one thought that comes to mind is having another
DB, say workDB, in the same server which then can connect via a local DB
link to the standby DB. I am assuming performance will not be bad because
the data comes from the same server. Of course there will be additional
resource usage, esp IO and CPU that need to be considered.
One important thing that comes to my mind is the statistics. Is there a way
to make the 'workDB' see the statistics in the remote database (the
standbyDB) when the workDB queries come up with execution plans? This may
sound silly, but you never know unless you ask.
19c, multi TB size warehouse.
CP.
