ORACLE 19C数据库启动后，无监听服务

郑全

1.检查数据库状态

[oracle@szdb product]$ sqlplus /nolog

SQL*Plus: Release 19.0.0.0.0 - Production on Fri Oct 29 14:48:12 2021
Version 19.12.0.0.0

Copyright (c) 1982, 2021, Oracle.  All rights reserved.

SQL> conn / as sysdba
Connected.
SQL> SELECT name,open_mode from v$database;

NAME      OPEN_MODE
--------- --------------------
EMREP     READ WRITE

SQL>

2.查看监听服务：

[oracle@szdb product]$ lsnrctl status

LSNRCTL for Linux: Version 19.0.0.0.0 - Production on 29-OCT-2021 14:49:45

Copyright (c) 1991, 2021, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=szdb)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 19.0.0.0.0 - Production
Start Date                29-OCT-2021 14:31:53
Uptime                    0 days 0 hr. 17 min. 51 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/oracle/product/19.12.0/db_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/szdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=szdb)(PORT=1521)))
The listener supports no services
The command completed successfully
[oracle@szdb product]$

没有任何服务

默认动态注册服务。
3. 查看local_listener参数
  SQL> show parameter local_listener

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
local_listener                       string      LISTENER_EMREP
SQL>

4.确认TNSNAMES.ORA中存在连接串

[oracle@szdb admin]$ pwd
/u01/app/oracle/product/19.12.0/db_1/network/admin
[oracle@szdb admin]$
[oracle@szdb admin]$
[oracle@szdb admin]$ grep -i listener_ tnsnames.ora
LISTENER_ORCLCDB =

不存在

5.修改LOCAL_LISTENER，去掉
SQL> alter system set local_listener='';

System altered.

--马上注册一下
SQL> alter system register;

System altered.


6.重新验证
  [oracle@szdb product]$ lsnrctl status

LSNRCTL for Linux: Version 19.0.0.0.0 - Production on 29-OCT-2021 15:01:09

Copyright (c) 1991, 2021, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=szdb)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 19.0.0.0.0 - Production
Start Date                29-OCT-2021 14:31:53
Uptime                    0 days 0 hr. 29 min. 15 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /u01/app/oracle/product/19.12.0/db_1/network/admin/listener.ora
Listener Log File         /u01/app/oracle/diag/tnslsnr/szdb/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=szdb)(PORT=1521)))
Services Summary...
Service "emrep" has 1 instance(s).
  Instance "emrep", status READY, has 1 handler(s) for this service...
Service "emrepXDB" has 1 instance(s).
  Instance "emrep", status READY, has 1 handler(s) for this service...
The command completed successfully
[oracle@szdb product]$

已经OK.