OPEN STANDBY DATABASE IN READ ONLY

SQL> select PROTECTION_MODE,PROTECTION_LEVEL FROM V$DATABASE;

PROTECTION_MODE      PROTECTION_LEVEL

-------------------- --------------------

MAXIMUM PERFORMANCE  MAXIMUM PERFORMANCE

SQL> select name,db_unique_name,open_mode,DATABASE_ROLE from v$database;

NAME   DB_UNIQUE_NAME  OPEN_MODE       DATABASE_ROLE

--------- ------------------------------ -------------------- ----------------

ORCL   ORCLSTB1  MOUNTED       PHYSICAL STANDBY

 SQL> alter database open read only;

Database altered.

SQL> select name,db_unique_name,open_mode,DATABASE_ROLE from v$database;

NAME   DB_UNIQUE_NAME  OPEN_MODE       DATABASE_ROLE

--------- ------------------------------ -------------------- ----------------

ORCL   ORCLSTB1  READ ONLY       PHYSICAL STANDBY

SQL> select PROTECTION_MODE,PROTECTION_LEVEL FROM V$DATABASE;

PROTECTION_MODE      PROTECTION_LEVEL

-------------------- --------------------

MAXIMUM AVAILABILITY MAXIMUM AVAILABILITY

SQL> SELECT database_role, open_mode FROM v$database;

DATABASE_ROLE  OPEN_MODE

---------------- --------------------

PHYSICAL STANDBY READ ONLY WITH APPLY

SQL> select process,status from v$managed_standby;

PROCESS   STATUS
--------- ------------
ARCH      CLOSING
ARCH      CLOSING
ARCH      CONNECTED
ARCH      CLOSING
ARCH      CLOSING
RFS      IDLE
RFS      IDLE
RFS      IDLE
RFS      IDLE
MRP0      APPLYING_LOG
 


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