ORA-10456: cannot open standby database; media recovery session may be in progress

A dataguard quick tip!

# Error

SQL> ALTER DATABASE OPEN READ ONLY;
ALTER DATABASE OPEN READ ONLY
*
ERROR at line 1:
ORA-10456: cannot open standby database; media recovery session may be in progress

# Solution

SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE CANCEL;
Database altered.
SQL> ALTER DATABASE OPEN READ ONLY;
Database altered.
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;
Database altered.

See ya! 🙂
Matheus.

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