不可解な問題があります。Linux に Oracle 11g をセットアップしましたが、正常に動作していました。次のようなSIDベースの接続文字列を使用して、他のマシンからリモートで接続できました
sqlplus myschema@192.168.184.102:1521:orcl
その後、不可解な理由で機能しなくなりました。私や他の誰かが何を揺らしたのかわかりません。
現在、SERVICE_NAME または TNSNAME ベースの方法を使用してのみリモートで接続できます
sqlplus myschema@192.168.184.102:1521/orcl
sqlplus myschema@ORCL
どちらも機能し、これは問題ありませんが、変更可能な SID 接続パターンに依存するアプリケーションがあります。心優しい魂が、私が欠けているものを理解するのを助けてくれますか?
以下は私の構成です：
リスナー.ORA:
[oracle@dbora112 ~]$ cat /opt/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# listener.ora Network Configuration File: /opt/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = dbora112)(PORT = 1521))
)
)
ADR_BASE_LISTENER = /opt/u01/app/oracle
リスナーのステータス:
[oracle@dbora112 ~]$ lsnrctl status
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 04-MAR-2015 14:50:05
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 04-MAR-2015 14:37:12
Uptime 0 days 0 hr. 12 min. 52 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora
Listener Log File /opt/u01/app/oracle/diag/tnslsnr/dbora112/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=dbora112)(PORT=1521)))
Services Summary...
Service "orcl" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
Service "orclXDB" has 1 instance(s).
Instance "orcl", status READY, has 1 handler(s) for this service...
The command completed successfully
TNSNAMES.ORA:
[oracle@dbora112 ~]$ cat /opt/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# tnsnames.ora Network Configuration File: /opt/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.184.102)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SID = orcl)
)
)
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.184.102)(PORT = 1521))
SQLNET:
[oracle@dbora112 ~]$ cat /opt/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
# sqlnet.ora Network Configuration File: /opt/u01/app/oracle/product/11.2.0/dbhome_1/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
ADR_BASE = /opt/u01/app/oracle
TNSを使用して問題なく接続できます
[oracle@dbora112 ~]$ sqlplus schema/xxx@ORCL
SQL*Plus: Release 11.2.0.3.0 Production on Wed Mar 4 14:54:10 2015
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
サービス名を使用して問題なく接続できます
[oracle@dbora112 ~]$ sqlplus schema/xxx@192.168.184.102/ORCL
SQL*Plus: Release 11.2.0.3.0 Production on Wed Mar 4 14:55:52 2015
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL>
SIDに接続できません
[oracle@dbora112 ~]$ sqlplus schema/xxx@192.168.184.102:orcl
SQL*Plus: Release 11.2.0.3.0 Production on Wed Mar 4 14:56:38 2015
Copyright (c) 1982, 2011, Oracle. All rights reserved.
ERROR:
ORA-12545: Connect failed because target host or object does not exist
データベース インスタンス (SID)
SQL> select instance_name from v$instance;
INSTANCE_NAME
----------------
orcl