Known Schema Comparison Problems
When comparing Oracle schemas you may face some problems caused by Oracle limitations. Here is the list of widely-known problems:
- If you compare schema on Oracle 6.0 with another schema on Oracle 4 or 5.0, and there are tables with TIMESTAMP column, status of such tables will always be different even if they have the same structure or they were synchronized.
- Oracle does not allow editing tables with EXAMPLE table engine, so synchronization of such tables will fail.
- On the Oracle 6.0 table, containing VARCHAR column can have ROW_FORMAT = FIXED. On the earlier Oracle version you may execute ALTER TABLE … ROW_FORMAT = FIXED but it does not do anything. So, such tables will have Different comparison status even if after their synchronization.
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