I have received several questions from customers in the past weeks using Oracle Multitenant about the parameter
exclude_seed_cdb_view.It magically disappeared and morphed into
_exclude_seed_cdb_view since Oracle Database 22.214.171.124. To be fair, the
exclude_seed_cdb_view is listed in the list of obsolete parameters in Oracle Database 126.96.36.199.
What is EXCLUDE_SEED_CDB_VIEW?
This parameter hides everything belonging to the
PDB$SEED from the usual queries. For instance you ran a query against
CDB_DATA_FILES but you won’t see the data files belonging to
PDB$SEED in the result set. Whether this is good or bad, at least RMAN (Recovery Manager) worked always correctly.
But I’m …Continue reading...