Oracle Tips by Burleson

Oracle 10g Automatic Determination of Redo Log Files

In Oracle Database 10g, when you are using the LogMiner against the same database that generated the redo log files, LogMiner scans the control file and determines the redo log files needed, based on the requested time or SCN range. You no longer need to map the time frame to an explicit set of redo log files.

For this scan to occur, you need to use the continuous_mine option and specify startscn or starttime.

The following example shows the syntax:

SQL> ALTER SESSION SET NLS_DATE_FORMAT =
     ’DD-MON-YYYY HH24:MI:SS’;

SQL> EXECUTE DBMS_LOGMNR.START_LOGMNR( -
2 STARTTIME => '19-Sep-2003 10:15:00', -
3 ENDTIME => '19-Sep-2003 10:45:00', -
4 DBMS_LOGMNR.CONTINUOUS_MINE);

Get the complete Oracle10g story:

The above text is an excerpt from "Oracle Database 10g New Features: Oracle10g Reference for Advanced Tuning and Administration", by Rampant TechPress.  Written by top Oracle experts, this book has a complete online code deport with ready to use scripts. 

To get the code instantly, click here:

http://rampant-books.com/book_2003_2_oracle10g.htm

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