idle sessions with sql_address = 00

Hi gurus,

DB: oracle 11g
application: weblogic

I could see a lot of sessions not valid with sql_address = 00 and Virgin sql_id appearing intermittently and causing connection problems.
prev_sql_id of the majority of the lines are the same and the sql_text is "select count (*) from dual!

What could be the reason for these invalid sessions? not able to understand the prev as sql_text

Help, please
Charles

The sessions are not disabled. They do nothing.
Also, this causes no problems connecting.
Applications such as weblogic has several "features".

-They often perform dummy sql to check the availability of data, such as select count (*) of the double
-They do not have persistent connections

This point is addressed by setting up shared server and enabling connection pooling.

-------
Sybrand Bakker
Senior Oracle DBA

Tags: Database

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