ORA-00204: error in reading (block string, # blocks string) of control file

ORA-00204: error in reading (block string, # blocks string) of control file

ORA-00204: error in reading (block string, # blocks string) of control file
Cause: A disk I/O failure was detected on reading the control file.
Action: Check if the disk is online, if it is not, bring it online and try a warm start again. If it is online, then you need to recover the disk.

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