Oracle 12c throws an redolog error on startup

Hi ,
Below is the output after querying for redo log files. The database is in mounted and not opened. Iam not able to open the database.

1      1      523      NO      INACTIVE      D:\APP\ADMIN\ORADATA\ORCL\REDO01.LOG      50
2      1      524      NO      INACTIVE      D:\APP\ADMIN\ORADATA\ORCL\REDO02.LOG      50
3      1      525      NO      CURRENT      D:\APP\ADMIN\ORADATA\ORCL\REDO03.LOG      50 -- Is the corrupted redo log file

Iam not able to switch the log files as the database is not  opened. The below command fails with the error

ALTER SYSTEM SWITCH LOGFILE;

Error starting at line 13 in command:
ALTER SYSTEM SWITCH LOGFILE
Error report:
SQL Error: ORA-01109: database not open
01109. 00000 -  "database not open"
*Cause:    A command was attempted that requires the database to be open.
*Action:   Open the database and try the command again

Iam trying to drop the redolog file and recreate the group. Any help is really appreciated.

>Iam trying to drop the redolog file and recreate the group.

There are examples all over the Internet.  What are you trying and what isn't working?

The issue is the redolog3 is the current log file. Hence i want to run the log switch to change the log.
But for that My DB needs to be opened. Iam not able to open the DB because of redolog file

Everything you just posted makes perfect sense.  You have a corrupt redo log.  You need to resolve that before you can open the database.

If this is an important database to you, I would contact Oracle Support.

Thanks a lot

So, what did you end up doing to get your database open?

Going from memory:
If you used "_allow_restlogs_corruption", you need to do a full export, recreate the database and import everything back in.  Otherwise, you're in an unsupported state.