Question

I have a number of tables that use the trigger/sequence column to simulate auto_increment on their primary keys which has worked great for some time.

In order to speed the time necessary to perform regression testing against software that uses the db, I create control files using some sample data, and added running of these to the build process.

This change is causing most of the tests to crash though as the testing process installs the schema from scratch, and the sequences are returning values that already exist in the tables. Is there any way to programtically say ‘Update sequences to max value in column’ or do I need to write out a whole script by hand that updates all these sequences, or can I/should I change the trigger that substitutes the null value for the sequence to some how check this (though I think this might cause the mutating table problem)?

Answer 1

You can generate a script to create the sequences with the start values you need (based on their existing values)….

SELECT 'CREATE SEQUENCE '||sequence_name||' START WITH '||last_number||';' FROM   ALL_SEQUENCES WHERE  OWNER = your_schema 

(If I understand the question correctly)