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Create AWR report to compare two time periods

Oracle Database Tips by Donald BurlesonDecember 14, 2015

Question:  A plain AWR report compares two points in time, but I want to generate an AWR report that compares two distinct time periods.  For example, I want an AWR report showing changes between 3:00 PM and 4: PM last Wednesday and Thursday.  How do I get an AWR report that compares two elapsed time periods?

Answer:  The awrddrpt.sql report is the Automated Workload Repository Compare Period Report. The awrddrpt.sql script is located in the $ORACLE_HOME/rdbms/admin directory. 

See my notes on awrddrpt.sql for more details.

For example, is we wanted to compare the period between 3:00 PM-4:00 PM for Wednesday to the same time period on Thursday, we could use the awrddrpt.sql script.

Specify the First Pair of Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap: 13747
First Begin Snapshot Id specified: 13747

Enter value for end_snap: 13749
First End Snapshot Id specified: 13748

Specify the Second Pair of Begin and End Snapshot Ids
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Enter value for begin_snap2: 13915
Second Begin Snapshot Id specified: 13915

Enter value for end_snap2: 13917
Second End Snapshot Id specified: 13916

Here is an example of an awrddrpt.sql report  showing how two AWR reports are compared.

 

 
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