You must enable supplemental logging prior to generating log files that will be analyzed by LogMiner.
When you enable supplemental logging, additional information is recorded in the redo stream that is needed to make the information in the redo log files useful to you. Therefore, at the very least, you must enable minimal supplemental logging, as the following SQL statement shows:
ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
To determine whether supplemental logging is enabled, query the V$DATABASE view, as the following SQL statement shows:
SELECT SUPPLEMENTAL_LOG_DATA_MIN FROM V$DATABASE;
I alredy read information in MOS, but nothing comes up, and none of your anserws help me.
I read all the information you give me, i'm not new in Oracle, so please if you know something that really matters, let me know.