MySQL now belongs to Oracle – Oracle’s track record on keeping acquisitions alive is mixed. If you want a real database that is extremely Oracle compliant (PLpgSQL is very close to PL/SQL) look no further than then harder (more secure), better, faster Postgresql 8.4 the world’s most advanced Open Source database.   Using the new cloud computing functionality in Ubuntu 9.04 and pretty soon we’re talking very high performance and very accessible databases.
So – now is the time to switch to a real database.