Oracle DB audit trails

Question

Someone (or something) actually updated a value in my table wrongly. I am trying to find out when the update happened. Unfortunately, there is no audit trigger being created for the said table.

Is there other ways or logs that I can check and verify what SQL statements were run at what time?

I had tried to look at v$sql table, but I don't think that table is capturing all the SQL statements being performed on the database. Eg I specifically did an UPDATE statement, but it is not captured in the v$sql table.

Can I look at the redo.log? However, I do not know how to interpret this log.

Answer 1

Your only real option is logminer, which isn't for the faint of heart.

The documentation is here: http://docs.oracle.com/cd/B19306_01/server.102/b14215/logminer.htm

v$sql rows may get aged out after a while. Did you account for case sensitivity when looking in v$sql ?

select * from v$sql where upper(sql_fulltext) like '%UPDATE%';