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to run query when no query is running in the db

gs79 asked
Last Modified: 2012-05-12
I have a plsql blick which reads and insert rows into a table..I want to make sure that when this block runs no other query is running in the database..

The query should run between 10p and 6 am and when it fires automatically it should check if there any otjher queries running and run only when no query is running.

Is there a way to do this?

here is the query

insert into tab
select col1, col2 from
tab a, tabb, tab c
where <join conditions &filters>;
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