The ability to upgrade to Adaptive Server 15.0.2 to use new password encryption while keeping the ability to downgrade to an earlier release is supported in Adaptive Server 15.0.2. This password downgrade period is introduced only for upgrade in the event that problems arise after upgrade and the administrator chooses to downgrade back to Adaptive Server 15.0.1, for example.The ability to downgrade passwords is enabled by default upon upgrade and remains in effect until an administrator chooses to end this by disabling it.While enabled, only the new functionality is lost by downgrade to Adaptive Server 15.0.1, the password changes made by users are not lost. All changes take place in master database; no user databases are affected.
If you run sp_downgrade then
shutdown the server and for some reason reboot the 15.0.2 server
all the downgrade changes are undone. In this case you must run sp_downgrade again.
