ORA-16005: database requires recovery

Due to some reason, I had to bring one of our test databases in read only mode, but the follwoing error generated while doing the same. "ORA-16005: database requires recovery".

I'm sure that we have't done any changes with the database recently. Well, the problem was resolved by shutting down the database in normal mode. Please take a look at the below steps for the same.

SQL> startup force open read only;

ORA-16005: database requires recovery

SQL> shutdown immediate;

SQL> startup restrict;

SQL> shutdown;

SQL> startup mount;

SQL> alter database open read only;

SQL> select open_mode from v$database;
OPEN_MODE

----------

READ ONLY

Conclusion: If you have got the error "ORA-16005: database requires recovery" due to other reasons, I request you to take a look at the metalink note ID: 316154.1

Regards,

Sabdar Syed.