If the database does not exist, an error appears in the error log and the connection attempt fails with an SQLException indicating that the database cannot be found.

This operation performs a full upgrade, as defined in "Upgrading a database" in the . For more information about upgrades, see the other topics under "Upgrades" in the .

For a database for which authentication and SQL authorization are both enabled, only the database owner can perform a full upgrade. See "Configuring user authentication" and "Configuring user authorization" in the for more information.

Note: You cannot perform a full upgrade on a database already booted in soft upgrade mode. If a database is already booted in soft upgrade mode, the upgrade=true attribute will have no effect. If a database is already booted in soft upgrade mode, you can first shutdown the database with the shutdown=true attribute and then connect with upgrade=true to perform the upgrade.

You must specify a databaseName (after the subprotocol in the database connection URL) or a databaseName=nameofDatabase attribute with this attribute.

You cannot combine this attribute with the collation or territory=ll_CC attributes.