In this post provides you queries to find out the different client connection details like character set, the client software or driver etc. with their count.
Sql Query to Check Different Client Character Set, Client Version and Client Driver or Software Connected to The Database
Query to Get Hostname Instance Name and Startup Time for Oracle RAC Database
As a DBA if you are supporting multiple database environments, it is difficult to maintain the list of instance and database details. Using this query, you will be able to easily to fetch the details from the database. This query also give you the startup time for each instance.
How to Check Active Transaction in Oracle Database – v_$transaction
V_$transaction table will give you the active transaction in the database. This dynamic view get recorded with the active transaction which is being executed or waiting for the resources in the database or operating system.
