OGG-BigData : Should We pick OP_TS Or POS Value To Decide Sequence Of DML Operation (Doc ID 2804758.1)

Last updated on APRIL 17, 2023

Applies to:

Goal

Env Details.
OGG DB Extract 0n Oracle
OGG BigData app Replicate to S3. (Parquet File)

1. We are applying this parquet file on intial load. While applying S3 Data should we consider OP_TS or POS Vaue to determine the sequence of tranactions generated on Extract Side and what to apply on source.
2. We are Converting U Opt_Type to "Delete" old Rerecords and "Insert" to Insert new data.
3. When we sort CDC Files (Incremental Data / Non Initial Load) based on OP_TS, the apply order changes
4. When we sort CDC Files (Incremental Data / Non Initial Load) based on POS, the apply sequence gets into correct order.
5. We want to know whether POS Order is right mechanism to identify sequence of rows generated at source side.

Because we don’t have change date column in source table and we want to identify the sequence of order the rows generated so that same sequence we can apply on target end.

Solution

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