1. Copyright © 1998-2000 SoftTree Technologies, Inc. DB Log Expert From Oracle Admin Manual: “The best way to determine the appropriate number of online redo log files for a database instance is to test different configurations.”

2. Tuning Oracle Redo Logs is difficult and usually takes a long time. There is no clear formulas for how to calculate number of groups, members, member sizes, size of redo log buffer, and other log parameters. The challenge is to get your database running at a best performance without sacrificing main redo log functions to protect the data from disk failures. Use DB Log Expert to gather complete information on Redo Logs configuration and usage. You will need this information to make right tuning decisions.

3. See complete list of all redo log parameters - without round trip to the server

4. Info on Redo Logs can be obtained from the dynamic performance tables. However, even for an experienced Oracle DBA it is fairly difficult to quickly figure out redo log configuration in a new environment. Dynamic performance tables

5. Easy-to-read graphical display of redo log groups, log members, their statuses and states provides excellent overall view of redo log configuration Redo Log Groups Log Complete File Names Member Statuses and States

6. Use history tab to see historical trends for database/user activity (by year and month) TIP Use this information for balancing database loads.

7. Use trends tab to see historical trends for database/user activity (by day of week and/or by time) TIP Use this information for balancing database load.

8. Get information on redo log gets, sleeps, and misses TIP Check out Comments section for expert advice on redo log performance

9. Monitor checkpoints TIP If checkpoints are not set to occur between log switches, make all groups the same size to guarantee that checkpoints occur at regular intervals.

10. Benefits Review DB Log Expert is the only tool that provides Oracle DBA with complete easy-to-understand and ready-to- use information for Oracle redo log files configuration and usage. Using information provided by this tool Oracle DBAs can: DB Log Expert is the only tool that provides Oracle DBA with complete easy-to-understand and ready-to- use information for Oracle redo log files configuration and usage. Using information provided by this tool Oracle DBAs can:  Efficiently Test different redo log configuration in order to find the optimum configuration that has the fewest groups possible without hampering LGWR’s writing redo log information.  Manage and monitor redo log files.  Better understand and balance database loads

11. Close DB Log Expert usage and installation is extremely easy and simple. No server side components required, no need to restart the database instance or database server computer, no configuration changes needed on the computer where you are installing it. You can install DB Log Expert in a matter of seconds and start using it right away.DB Log Expert usage and installation is extremely easy and simple. No server side components required, no need to restart the database instance or database server computer, no configuration changes needed on the computer where you are installing it. You can install DB Log Expert in a matter of seconds and start using it right away.