PassThrough=2
PassThrough=2 specifies that INSERT,
UPDATE and DELETE statements performed on tables in
read-only cache groups or user managed cache groups with the READONLY cache
table attribute are passed through to the Oracle database.
Passthrough=1 behavior applies for all other operations and cache group types.
Note:
You are responsible in preventing conflicts that may occur if you update the same row in a cache table in TimesTen as another user updates the cached Oracle Database table concurrently.
Figure 5-3 shows that updates to Table A and Table G in a read-only cache group are passed through to the Oracle database.
