The number of before change images to be maintained.
If the JOURNAL keyword is specified without NO or DUAL, then a single copy of the image is maintained unless FALLBACK is in effect or is also specified.
If journaling is requested for a table that uses fallback protection, DUAL images are maintained automatically.
Permanent journaling is not supported for NoPI tables, column-partitioned tables, global temporary tables, or volatile tables.
- Dual images are maintained.
- A journal image is not maintained.