See my error and my try (ora-12528 ) after try new err ora-00202

Question

try to connect my 10g database but that give me this error
ORA-12528: TNS:listener: all appropriate instances are blocking new connections
some body give me idea i try this
c:\>set oracle_sid=universi
c:\>sqlplus sys as sysdba
enter password :
connecyt to
oracle database 10g enterprise edition release
sql> select status from v$instance;
status
started
sql>alter database mount;
alter database mount
error at line 1:
ora-00204: error in reading <block 3, # blocks 8> of control file
ora-00202: control file:
'D:\ORACLE\PRODUCT\10.2.0\ORADATA\UNIVERSI\CONTROL01.CTL'
ora-27091: UNABLE TO QUEUE 1/0
ora-27070: ASYNC READ/WRITE FAILED
OSD-04006: ReadFo;e<> failure, unable to read from file
O/S-Error <OS 23> Data error <cyclic redundancy check>.
but after this i fasing this error
ora-00202
ora-00204
please give me idea how i connect my 10g
thank you

Answer 1

ORA-12528: TNS:listener: all appropriate instances are blocking new connections
ORA-12528:     TNS:listener: all appropriate instances are blocking new connections
Cause:     All instances supporting the service requested by the client reported that they were blocking the new connections. This condition may be temporary, such as at instance startup.
Action:     Attempt the connection again. If error persists, then contact the administrator to check the status of the instances.
This is mostly the error that is there when we try to give a startup after a shutdown.Most probably its a temporary error.I faced it once but there was nothing relevant that I could find for it.What I tried was shutdown,wait for some time and again startup.
For the second error message, you have issues with your control file.As others already have asked, is your controlfile available and read/writeable?
Aman....