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  • 案例:使用scan IP无法连接数据库

    环境:Oracle RAC(11.2.0.3)
    现象:通过scanIP连接数据库报错ORA-12514: ORA-12514: TNS:listener does not currently know of service requested in connect descriptor

    1.查看scan listener状态,发现服务没有注册成功:

    [grid@rac1 ~]$ lsnrctl status LISTENER_SCAN1
    
    LSNRCTL for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production on 10-APR-2017 11:06:34
    
    Copyright (c) 1991, 2011, Oracle.  All rights reserved.
    
    Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
    STATUS of the LISTENER
    ------------------------
    Alias                     LISTENER_SCAN1
    Version                   TNSLSNR for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production
    Start Date                14-MAR-2017 23:19:53
    Uptime                    26 days 11 hr. 46 min. 41 sec
    Trace Level               off
    Security                  ON: Local OS Authentication
    SNMP                      ON
    Listener Parameter File   /oracle/app/grid_home/network/admin/listener.ora
    Listener Log File         /oracle/app/grid_home/log/diag/tnslsnr/jyrac2/listener_scan1/alert/log.xml
    Listening Endpoints Summary...
      (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
      (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.80)(PORT=1521)))
    The listener supports no services
    The command completed successfully
    

    2.Oracle用户查看 remote_listener 参数配置:

    SQL> show parameter remote_listener
    
    NAME                                 TYPE        VALUE
    ------------------------------------ ----------- ------------------------------
    remote_listener                      string      
    

    发现remote_listener参数为空,这显然是不正常的。

    3.查看/etc/hosts的scan IP配置行:
    cat /etc/hosts

    192.168.1.80 jyrac-scan
    

    4.oracle用户登录数据库,配置remote_listener参数:

    SQL> alter system set remote_listener = 'jyrac-scan:1521' sid='*' scope=both;
    SQL> alter system register;
    

    5.再次查看scan listener状态,发现服务已经注册成功:

    [grid@rac1 ~]$ lsnrctl status LISTENER_SCAN1
    
    LSNRCTL for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production on 10-APR-2017 11:13:47
    
    Copyright (c) 1991, 2011, Oracle.  All rights reserved.
    
    Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))
    STATUS of the LISTENER
    ------------------------
    Alias                     LISTENER_SCAN1
    Version                   TNSLSNR for IBM/AIX RISC System/6000: Version 11.2.0.3.0 - Production
    Start Date                14-MAR-2017 23:19:53
    Uptime                    26 days 11 hr. 53 min. 54 sec
    Trace Level               off
    Security                  ON: Local OS Authentication
    SNMP                      ON
    Listener Parameter File   /oracle/app/grid_home/network/admin/listener.ora
    Listener Log File         /oracle/app/grid_home/log/diag/tnslsnr/jyrac2/listener_scan1/alert/log.xml
    Listening Endpoints Summary...
      (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_SCAN1)))
      (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.1.80)(PORT=1521)))
    Services Summary...
    Service "SERVICE2" has 1 instance(s).
      Instance "testdb1", status READY, has 1 handler(s) for this service...
    Service "testdb" has 2 instance(s).
      Instance "testdb1", status READY, has 1 handler(s) for this service...
      Instance "testdb2", status READY, has 1 handler(s) for this service...
    Service "testdb2" has 1 instance(s).
      Instance "testdb2", status READY, has 1 handler(s) for this service...
    The command completed successfully
    

    再次测试通过scanip连接数据库已经ok。

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  • 原文地址:https://www.cnblogs.com/jyzhao/p/6688984.html
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