Hi

When i was trying to statrtup the database by issuing the command startup i got the follwoing error:
ORA-03113 end-of-file on communication channel
and the second time i have issued the startup command i got the follwoing errors:
ORA-24324 service handle not initialized
ORA-01041 internal error. hostdef extension doesn't exist

So what could be the problem and what is the solution for that

Thank you in advance