Additional data capture using Mview log

I want to create a Mview log on my table of source of change data capture. Every day I use the data in Mlog Update/Insert the target table. After that I truncates the mlog.

I am facing two problems:

(1) by updating the source table, I get 'U' value to the title of the column OLD_NEW$ $. How do I know that it is old or new. I just want ' o 'or' not so that I can identify which is the new value of the values.

(2) suppose a record is updated several times in the source table, or a record is inserted and then deleted, in this case it is not possible to simply use $ $ $ OLD_NEW = 'n' to fetch the differentials. In this case, how can I identify new records.

CREATE TABLE src_t (KEY NUMBER, VARCHAR2 val (1), CONSTRAINT t_pk PRIMARY KEY (KEY));

CREATE materialized VIEW LOG ON t WITH sequence (val), PRIMARY KEY, including the new VALUES;

The problem you have is that you do not use the published work procedures.

A fast refresh uses the journal of
A full update truncates the log.

That said, what you do is
-Buying a car
-Remove the motor
-Use it as a bike

You shouldn't touch with internal logs. It will create havoc. Mark my words. You have been warned.
---------
Sybrand Bakker
Senior Oracle DBA

Tags: Database

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