Awr snapshot processing also writes it to persistent storage. How to generate awr report via sqlplus, enterprise manager. This shows the size of each sga region after amm has changed them. Awr report detailed analysis mike ault oracle guru texas memory systems. Awr complements, but doesnot replace realtime monitoring. This gives an overall summary of the instance during the snapshot period, and it contains important aggregate summary information. The awr header was expanded to include data about the platform, cpus, cores, and sockets, as well as memory available in the server. Awr supports the capture of baseline data by enabling you to specify and preserve a pair. Awr report detailed analysis new york oracle user group. Steps to analyze awr report in oracle april 06, 2015. How to read an awr report burleson oracle consulting.
By going through the awr report we can easily solve issues like slow database, high wait events, slow query. This information can be compared to the original init. With these default settings, a typical system with an average of 10 concurrent active. With these default settings, a typical system with an average of 10 concurrent. The oracle s automatic workload repository awr collects, processes, and maintains performance statistics for problem detection and selftuning purposes. The addm tab displays information for addm analysis tasks and realtime addm analysis reports. Oracle 8i introduced the statspack functionality which oracle 9i extended. Repository awr was introduced with oracle 10g and is still being used in 18c. In addition to the awr reports, 10g databases also have an advisory feature called addm which may help to pinpoint the key problem areas and how to fix them. I have selected few major performance statics to read the awr report. The report generated by awr is a big report and it can take years of experience to actually understand all aspects of this report. You can generate an awr compare periods report for the time period from 10. It is also written out to persistent store by the awr snapshot processing. Comparing database performance over time oracle help center.
Addm report provides analysis of the parts of the system that are. The addm report provides root cause analysis of the parts of the system. To enable easier highlevel analysis of the wait events, events are grouped into classes. Awr report contains much data but contains no concrete recommendations for action. You can view the results of the analysis using oracle enterprise manager or by viewing a report in a sqlplus session. Automatic performance statistics oracle help center. Ault oracle guru nuclear navy 6 years nuclear chemistprogrammer 10 years kennedy western university graduate bachelors degree computer science. An addm analysis is performed every time an awr snapshot is taken and the results are saved in the database.
Please follow the same steps to create your own awr report for debugging. In oracle 10g or higher, the awr report can be generated using selected time. Introduction to automatic workload repository awr in oracle. Introduced in oracle 10g and having evolved from the statspack functionality of oracle 8i9i, the automatic workload repository report or awr report as it is more commonly known as is a vital. You can download this awr report to check and analyze it via sftp or scp etc. The oracles automatic workload repository awr collects, processes, and maintains performance statistics for problem detection and selftuning purposes. Automatic workload repository awr in oracle database 10g.
Awr advance workload repositoryreport in oracle 10g oracle. You can generate oracle awr report by using enterprise manager. Awr snapshot reports oracle provides reports that you can run to analyze the data in the awr. In oracle 10g statspack has evolved into the automatic workload repository awr. Awr report the awr report is the most well known performance report. Automatic workload repository report or awr report collects, processes. Oracle have provided many performance gathering and reporting tools over the years. Addm analyzes the data captured in the snapshots to perform its performance analysis. Awr report contains much data but contains no concrete recommendations for.