Oracle同一个IP端口监听多个数据库实例-蒲公英云

Oracle 11g配置数据库同一个IP和端口来监听多个数据库实例，我需要监听orcl和orcl002两个数据库实例，参考过程如下。

$ find $ORACLE_HOME -name listener.ora
/opt/oracle/product/11.2.0/network/admin/samples/listener.ora
/opt/oracle/product/11.2.0/network/admin/listener.ora
$ vim $ORACLE_HOME/network/admin/listener.ora

1，修改监听器配置，增加监听的SID_LIST，如果有多个SID，就需要再SID_LIST中指定多个SID_DESC。默认配置中无SID_LIST，手动添加下面蓝色部分内容：
# listener.ora Network Configuration File: /opt/oracle/product/11.2.0/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
)
)

SID_LIST_LISTENER = #命名规则为SID_LIST_+上面定义的监听器名称。该段用于定义监听器的服务即为哪些数据库实例提供监听服务
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = orcl002) #数据库名
(SID_NAME = orcl002) #数据库实例名
)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(SID_NAME = orcl)
)
)

ADR_BASE_LISTENER = /opt/oracle

2，修改tnsnames.ora文件，添加SID：
$ find $ORACLE_HOME/ -name tnsnames.ora
/opt/oracle/product/11.2.0/network/admin/samples/tnsnames.ora
/opt/oracle/product/11.2.0/network/admin/tnsnames.ora
$ vim $ORACLE_HOME/network/admin/tnsnames.ora

修改文件内容如下，添加SID：
# tnsnames.ora Network Configuration File: /opt/oracle/product/11.2.0/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

ORCL002 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl002)
)
)

ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)
)

注意：
1）要确保在监听文件listener.ora中也有对应的一个ADDRESS项也包含同样的三个子参数并且子参数的值对应都相等
2）这里SERVICE_NAME的值必需确保与监听文件listener.ora中某SID_DESC项下的SID_NAME参数的值相等

[oracle@localhost 11.2.0]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 09-JUL-2019 21:02:08

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
-———————————-
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 09-JUL-2019 21:01:56
Uptime 0 days 0 hr. 0 min. 11 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11.2.0/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary…
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
Services Summary…
Service “orcl” has 1 instance(s).
Instance “orcl”, status UNKNOWN, has 1 handler(s) for this service…
Service “orcl002” has 1 instance(s).
Instance “orcl002”, status UNKNOWN, has 1 handler(s) for this service…
The command completed successfully
[oracle@localhost 11.2.0]$

启动后，提示Instance “orcl”, status UNKNOWN, has 1 handler(s) for this service…
这个错误可能是由于实例没有注册到监听服务中去，尝试注册实例：alter system register;

SQL> conn / as sysdba
Connected.
SQL>
SQL> alter system register;
System altered.
SQL>

再尝试启动监听，发现让然失败，最后发现原来是自己的数据库实例没有启动。

启动两个数据库实例：
$ sqlplus /nolog
$ conn /as sysdba
$ startup

$ lsnrctl status
……
Services Summary…
Service “orcl” has 2 instance(s).
Instance “orcl”, status UNKNOWN, has 1 handler(s) for this service…
Instance “orcl”, status READY, has 1 handler(s) for this service…
Service “orcl002” has 1 instance(s).
Instance “orcl002”, status UNKNOWN, 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
$

发现orcl已经READY了，再启动另外一个orcl002：

$ export ORACLE_SID=orcl002
$ sqlplus /nolog
SQL> conn / as sysdba
SQL> startup
SQL> exit

然后再查看状态，发现orcl002也已经READY了

$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 09-JUL-2019 21:35:56

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
-———————————-
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 09-JUL-2019 21:27:55
Uptime 0 days 0 hr. 8 min. 1 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11.2.0/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/localhost/listener/alert/log.xml
Listening Endpoints Summary…
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521)))
Services Summary…
Service “orcl” has 2 instance(s).
Instance “orcl”, status UNKNOWN, has 1 handler(s) for this service…
Instance “orcl”, status READY, has 1 handler(s) for this service…
Service “orcl002” has 2 instance(s).
Instance “orcl002”, status UNKNOWN, has 1 handler(s) for this service…
Instance “orcl002”, status READY, has 1 handler(s) for this service…
Service “orcl002XDB” has 1 instance(s).
Instance “orcl002”, 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
$