SWITCHOVER VERIFY WARNING: switchover target has no standby database defined in LOG_ARCHIVE_DEST_n p

SQL> show parameter name;

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
cdb_cluster_name                     string
cell_offloadgroup_name               string
db_file_name_convert                 string      +DATA, +DATA
db_name                              string      orcl
db_unique_name                       string      orcl
global_names                         boolean     FALSE
instance_name                        string      orcl1
lock_name_space                      string
log_file_name_convert                string      +DATA, +DATA
pdb_file_name_convert                string
processor_group_name                 string

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
service_names                        string      orcl
SQL> ALTER DATABASE SWITCHOVER TO dgorcl VERIFY;
ALTER DATABASE SWITCHOVER TO dgorcl VERIFY
*
ERROR at line 1:
ORA-16475: succeeded with warnings, check alert log for more details


SQL> !oerr ora 16475
16475, 0000, "succeeded with warnings, check alert log for more details"
// *Cause:  The ALTER DATABASE SWITCHOVER TO <target_db_name> VERIFY command
//          succeeded but with warnings.
// *Action: Check alert log for more details.

SQL> select database_role,open_mode from v$database;

DATABASE_ROLE    OPEN_MODE
---------------- --------------------
PRIMARY          READ WRITE
 

alert日志提示信息:

SWITCHOVER VERIFY: Send VERIFY request to switchover target DGORCL
SWITCHOVER VERIFY WARNING: switchover target has no standby database defined in LOG_ARCHIVE_DEST_n parameter. If the switchover target is converted to a primary database, the new primary database will not be protected.
ORA-16475 signalled during: ALTER DATABASE SWITCHOVER TO dgorcl VERIFY...

SWITCHOVER VERIFY WARNING: switchover target has no standby database defined in LOG_ARCHIVE_DEST_n p

https://www.cnblogs.com/halberd-lee/p/11051027.html