搭建rac dg备库连接数据库时报错ORA-12514

文档课题：搭建rac dg备库连接数据库时报错ORA-12514，如下所示：
[oracle@hisdb3 ~]$ sqlplus sys/oracle_4U@healdg as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sun Nov 27 12:01:15 2022

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

ERROR:
ORA-12514: TNS:listener does not currently know of service requested in connect
descriptor


Enter user-name: 
ERROR:
ORA-01017: invalid username/password; logon denied


Enter user-name: 
ERROR:
ORA-01017: invalid username/password; logon denied


SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
[oracle@hisdb3 ~]$ tnsping healdg

TNS Ping Utility for Linux: Version 11.2.0.4.0 - Production on 27-NOV-2022 12:17:13

Copyright (c) 1997, 2013, Oracle.  All rights reserved.

Used parameter files:


Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.220)(PORT = 1521)) (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.221)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = healdg)))
OK (0 msec)

[oracle@hisdb3 ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 27-NOV-2022 10:44:44

Copyright (c) 1991, 2013, Oracle.  All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date                27-NOV-2022 10:44:11
Uptime                    0 days 0 hr. 0 min. 32 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File         /u01/app/grid/diag/tnslsnr/hisdb3/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.133.220)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.133.222)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "heal" has 1 instance(s).
  Instance "healdg1", status UNKNOWN, has 1 handler(s) for this service...
Service "healdg" has 1 instance(s).
  Instance "healdg1", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
异常原因：
监听文件中GLOBAL_DBNAME应该是healdg，被写成heal.
[grid@hisdb3 admin]$ cat listener.ora
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER))))            # line added by Agent
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1))))                # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON                # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON              # line added by Agent

LISTENER = 
 (DESCRIPTION_LIST =
     (DESCRIPTION =
       (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.133.220)(PORT = 1521))
     )
 )
 
SID_LIST_LISTENER = 
 (SID_LIST = 
   (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1)
      (PROGRAM = extproc)
   )
  (SID_DESC = 
    (GLOBAL_DBNAME = healdg) 
    (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1) 
    (SID_NAME= healdg1)
  )
)
说明：按如上将global_dbname从heal修改为，此后监听状态正常.
[oracle@hisdb3 ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.4.0 - Production on 27-NOV-2022 12:17:25

Copyright (c) 1991, 2013, Oracle.  All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.4.0 - Production
Start Date                27-NOV-2022 12:16:36
Uptime                    0 days 0 hr. 0 min. 48 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/11.2.0/grid/network/admin/listener.ora
Listener Log File         /u01/app/grid/diag/tnslsnr/hisdb3/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.133.220)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.133.222)(PORT=1521)))
Services Summary...
Service "+ASM" has 1 instance(s).
  Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "healdg" has 2 instance(s).
  Instance "healdg1", status UNKNOWN, has 1 handler(s) for this service...
  Instance "healdg1", status BLOCKED, has 1 handler(s) for this service...
The command completed successfully
--同时正常连接
[oracle@hisdb3 ~]$ sqlplus sys/oracle_4U@healdg as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sun Nov 27 12:19:22 2022

Copyright (c) 1982, 2013, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options