7.7.1.2.4.7 Persistence Attributes
Persistent Columnar Cache
Starting with Oracle Exadata System Software
release 21.2.0, the
columnarCachePersMode
attribute controls the persistent
columnar cache feature. The valid attribute setting are:
-
on
- Enables the persistent columnar cache feature. -
off
- Disables the persistent columnar cache feature. -
auto
- Oracle Exadata System Software decides whether to enable or disable the persistent columnar cache feature. If thecolumnarCachePersMode
attribute is not set, then theauto
setting is implied.Starting with Oracle Exadata System Software release 21.2.11, the
auto
setting enables the persistent columnar cache feature (equivalent tocolumnarCachePersMode=on
). Previously, theauto
setting disabled the persistent columnar cache feature (equivalent tocolumnarCachePersMode=off
).
After you alter the columnarCachePersMode
attribute, you must
restart the cell server to implement the change.
Persistent Storage Index
Starting with Oracle Exadata System Software
release 21.2.0, the
storageIndexPersMode
attribute controls the persistent storage
index feature. The valid attribute setting are:
-
on
- Enables the persistent storage index feature. -
off
- Disables the persistent storage index feature. -
auto
- Oracle Exadata System Software decides whether to enable or disable the persistent storage index feature. If thestorageIndexPersMode
attribute is not set, then theauto
setting is implied.Starting with Oracle Exadata System Software release 21.2.11, the
auto
setting enables the persistent storage index feature (equivalent tostorageIndexPersMode=on
). Previously, theauto
setting disabled the persistent storage index feature (equivalent tostorageIndexPersMode=off
).
After you alter the storageIndexPersMode
attribute, you must restart
the cell server to implement the change.
Parent topic: ALTER CELL Commands for Setting Attributes