When an application connects to the database using the jConnect driver, two stored procedures are called:
The sp_tsql_environment procedure sets some database options for compatibility with Adaptive Server Enterprise behavior.
The sp_mda procedure is then called, and sets some other options. In particular, the sp_mda procedure determines the quoted_identifier setting. To change the default behavior, you should modify the
insert dbo.spt_mda values ... statements in jcatalog.sql.