This script will rebuild your sysmaster database! It is automatically run when doing an 'oninit -ivy' to initialize the database server.
Run the script and you will (probably) loose everything.
The sysmaster database is just a bunch of hooks
into shared memory. The engine does not depend on it for normal operations so it can go away for the short time it takes buildsmi to recreate it. Some of the tools will not function properly without it but the engine will be fine. Normally you do not even have to bounce the engine afterward.