If you installed the 12.5.4 automatic database expansion procedures using installdbextend, and then applied the threshold procedure to one or more database segments, the thresholds might not work properly when applied to the log segment after a downgrade to 12.5.0.3.
To clear all auto-expansion thresholds that might exist on one or more segments before downgrading, use the command:
sp_dbextend 'clear', 'threshold'
Alternatively, you can disable the entire automatic expansion feature server-wide without changing any existing rules or clearing any thresholds. Execute the following commands using sa_role:
use master go sp_dbextend 'disable', 'database', 'server-wide' go
This prevents threshold procedures from doing any work even if they were fired at runtime.
Sybase recommends that you leave all the policies and thresholds in place, and simply disable the entire feature server-wide before the downgrade. This simplifies re-enabling automatic expansion if you return to 12.5.4 later.
