ORA-01102: cannot mount database in EXCLUSIVE mode

数据库参数和我的实例名称不一致

SQL> startup

ORACLE instance started.

Total System Global Area 422670336 bytes

Fixed Size 1336960 bytes

Variable Size 402655616 bytes

Database Buffers 12582912 bytes

Redo Buffers 6094848 bytes

ORA-01102: cannot mount database in EXCLUSIVE mode

SQL> show user

USER is "SYS"

SQL> show parameter name

NAME TYPE VALUE

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

db_file_name_convert string

db_name string orcl

db_unique_name string orcl

global_names boolean FALSE

instance_name string tmp

lock_name_space string

log_file_name_convert string

service_names string orcl

SQL>

SQL> select status from v$instance;

STATUS

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

STARTED

SQL>

SQL>

SQL> alter system set db_unique_name=tmp scope=spfile;

System altered.

再次启动OK!