Follow the following steps if you are facing inconsistent control files error ORA-00214 in oracle database.
Step 1:
open the sqlplus and connect as sysdba user by the following command
conn / as sysdba
and enter password
Step 2:
Execute the following commands
STARTUP NOMOUNT;
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alter system set control_files=C:>oracleproduct10.20.0db10g1CONTROL01.CTL scope=spfile;
Step 3:
Execute the following commands and you may change the path of control file if any.
show parameter control_files;
shutdown immediate;
startup mount;
recover database;
alter database open;
Step 4:
If the error of inconsistent control files continues repeat step 2 and 3. And change the control01.CTL to control02.CTL or control03.CTL