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

SQL> alter database recover managed standby database disconnect from session;
Database altered.
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-10456: cannot open standby database; media recovery session may be in progress

SQL> alter database recover managed standby database cancel;
Database altered.

SQL> alter database open;
Database altered.

SQL> alter database recover managed standby database using current logfile disconnect;
Database altered.

SQL> select * from test;
ID
----------
1
此时备库就可以实时更新了。