From 11gR2 onwards, the Active Session History report can be created to monitor the performance of a standby database from the standby system. To use this feature, ensure that the database is up-and-running in the
Read-Only mode and the session history has retained the memory. Then, you can perform the following steps:
ashrpt.sqlscript. Before using this report you must know what parameters we have to pass while the report is running, for example, duration between two dates and times. Use the
ashrpt.sqlscript as follows:
SQL> @?/rdbms/admin/ashrpt.sql Current Instance ~~~~~~~~~~~~~~~~ DB Id DB Name Inst Num Instance ----------- ------------ -------- ...