OCM_Session1_4_Client-side Network configuration
4. Client-side Network configuration
4.1 Create the client-side network configuration files providing connect descriptors to your databases using local naming and easy connect methods.
4.1.1 The
prod alias should connect to the PROD instance using the
default listener
and always use a
dedicated server connection.
4.1.2 The
prod_s
alias should connect to the PROD instance using
LSNR2 and use a
shared server connection.
4.2 The racdb alias should connect to the RACDB service (created later) with a dedicated server connection.
4.2.1 The RACDB service will be running on your RAC Cluster
4.3 The emrep alias should connect to the EMREP instance (created later) wiht a dedicated server connection.
- 4.1 Create the client-side network configuration files providing connect descriptors to your databases using local naming and easy connect methods.
参考联机文档：
Net Services Reference ==>5 Profile Parameters (sqlnet.ora)
http://docs.oracle.com/cd/B19306_01/network.102/b14213/sqlnet.htm#sthref370
NAMES.DIRECTORY_PATH
Purpose
Use the parameter NAMES.DIRECTORY_PATH to specify the order of the naming methods used for client name resolution lookups.
Default
NAMES.DIRECTORY_PATH=(tnsnames, onames, hostname)
Values
Table 5-1 NAMES.DIRECTORY_PATH Values
| Naming Method Value | Description |
|---|---|
tnsnames (local naming naming method) |
Set to resolve a net service name through the tnsnames.ora file on the client. See Also: Oracle Database Net Services Administrator's Guide |
ldap (directory naming naming method) |
Set to resolve a database service name, net service name, or net service alias through a directory server. See Also: Oracle Database Net Services Administrator's Guide |
ezconnect or hostname (easy connect naming or host naming method) |
Select to enable clients to use a TCP/IP connect identifier, consisting of a host name and optional port and service name. See Also: Oracle Database Net Services Administrator's Guide |
cds (CDS external naming method) |
Set to resolve an Oracle database name in a Distributed Computing Environment (DCE) environment. See Also: Oracle Database Advanced Security Administrator's Guide |
nis (Network Information Service (NIS) external naming method) |
Set to resolve service information through an existing NIS. See Also: Oracle Database Net Services Administrator's Guide |
NAMES.DIRECTORY_PATH=(tnsnames,
ezconnect)
创建 sqlnet.ora，内容如下：
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
[oracle@ocm1 admin]$ vi sqlnet.ora
MES.DIRECTORY_PATH=(tnsnames, ezconnect)
~
"sqlnet.ora" [New] 1L, 41C written
[oracle@ocm1 admin]$
监听重启，验证：
[oracle@ocm1 admin]$
lsnrctl stop
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 18-MAR-2014 13:40:48
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521)))
The command completed successfully
[oracle@ocm1 admin]$
lsnrctl start
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 18-MAR-2014 13:40:58
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 18-MAR-2014 13:40:59
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/product/10.2.0/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc)))
Services Summary...
Service "EMREP" has 1 instance(s).
Instance "EMREP", status UNKNOWN, has 1 handler(s) for this service...
Service "PROD" has 1 instance(s).
Instance "PROD", status UNKNOWN, has 1 handler(s) for this service...
Service "plsextproc" has 1 instance(s).
Instance "plsextproc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
[oracle@ocm1 admin]$
lsnrctl stop lsnr2
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 18-MAR-2014 13:41:07
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1526)))
The command completed successfully
[oracle@ocm1 admin]$
lsnrctl start lsnr2
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 18-MAR-2014 13:41:21
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Starting /u01/app/oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 10.2.0.1.0 - Production
System parameter file is /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/10.2.0/db_1/network/log/lsnr2.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1526)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc1)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1526)))
STATUS of the LISTENER
------------------------
Alias lsnr2
Version TNSLSNR for Linux: Version 10.2.0.1.0 - Production
Start Date 18-MAR-2014 13:41:21
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/10.2.0/db_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/product/10.2.0/db_1/network/log/lsnr2.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1526)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=extproc1)))
The listener supports no services
The command completed successfully
[oracle@ocm1 admin]$
重新注册一下
SQL> alter system register
2 ;
System altered.
[oracle@ocm1 admin]$ cat sqlnet.ora
MES.DIRECTORY_PATH=(tnsnames, ezconnect)
验证easy 连接
http://docs.oracle.com/cd/B19306_01/network.102/b14212/naming.htm#i498306
CONNECT
username/
password@
[//]host[:
port][/
service_name]
验证，可以连接
SQL> connect system/oracle@//ocm1.localdomain:1521/PROD
Connected.
- 4.1.1 The prod alias should connect to the PROD instance using the default listener and always use a dedicated server connection.
参考联机文档：
Net Services Reference ==> 6 Local Naming Parameters (tnsnames.ora)
http://docs.oracle.com/cd/B19306_01/network.102/b14213/tnsnames.htm#sthref649
Example 6-1 Basic Format of tnsnames.ora File
Example
net_service_name=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=sales1-svr)(PORT=1521))
(ADDRESS=(PROTOCOL=tcp)(HOST=sales2-svr)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=sales.us.acme.com)))
修改后：
[oracle@ocm1 admin]$
vi tnsnames.ora
prod=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=PROD)
(SERVER=dedicated)))
~
验证连接：
SQL> conn system/oracle@prod
Connected.
可以连接
- 4.1.2 The prod_s alias should connect to the PROD instance using LSNR2 and use a shared server connection.
向刚创建的
tnsnames.ora添加prod_s,端口1526，PROD,shared
[oracle@ocm1 admin]$ vi tnsnames.ora
prod=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=PROD)
(SERVER=dedicated)))
prod_s=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1526))
(CONNECT_DATA=
(SERVICE_NAME=PROD)
(SERVER=shared)))
~
~
"tnsnames.ora" 14L, 291C written
[oracle@ocm1 admin]$
验证连接，可以连接
SQL> conn system/oracle@prod_s
Connected.
可查看是否使用shared服务连接：
Reference--》V$SESSION
http://docs.oracle.com/cd/B19306_01/server.102/b14237/dynviews_2088.htm#i1414383
SERVER |
VARCHAR2(9) |
Server type (DEDICATED| SHARED| PSEUDO| NONE) |
SQL> conn system/oracle@prod_s
Connected.
SQL> select sid,server from v$session;
SID SERVER
---------- ---------
280 DEDICATED
282 DEDICATED
285 DEDICATED
288 SHARED
290 DEDICATED
291 DEDICATED
292 DEDICATED
293 DEDICATED
294 DEDICATED
295 DEDICATED
296 DEDICATED
SID SERVER
---------- ---------
297 DEDICATED
298 DEDICATED
299 DEDICATED
300 DEDICATED
15 rows selected.
SQL> conn system/oracle@prod
Connected.
SQL> select sid,server from v$session;
SID SERVER
---------- ---------
280 DEDICATED
282 DEDICATED
285 DEDICATED
288 DEDICATED
290 DEDICATED
291 DEDICATED
292 DEDICATED
293 DEDICATED
294 DEDICATED
295 DEDICATED
296 DEDICATED
SID SERVER
---------- ---------
297 DEDICATED
298 DEDICATED
299 DEDICATED
300 DEDICATED
15 rows selected.
SQL>
- 4.2 The racdb alias should connect to the RACDB service (created later) with a dedicated server connection.
- 4.2.1 The RACDB service will be running on your RAC Cluster
向刚创建的
tnsnames.ora添加内容racdb，端口1521
[oracle@ocm1 admin]$ vi tnsnames.ora
prod=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=PROD)
(SERVER=dedicated)))
prod_s=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1526))
(CONNECT_DATA=
(SERVICE_NAME=PROD)
(SERVER=shared)))
racdb=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=RACDB)
(SERVER=dedicated)))
~
~
~
~
"tnsnames.ora" 22L, 440C written
[oracle@ocm1 admin]$
- 4.3 The emrep alias should connect to the EMREP instance (created later) wiht a dedicated server connection.
[oracle@ocm1 admin]$ vi tnsnames.ora
prod=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=PROD)
(SERVER=dedicated)))
prod_s=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1526))
(CONNECT_DATA=
(SERVICE_NAME=PROD)
(SERVER=shared)))
racdb=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=RACDB)
(SERVER=dedicated)))
emrep=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=ocm1.localdomain)(PORT=1521))
(CONNECT_DATA=
(SERVICE_NAME=EMREP)
(SERVER=dedicated)))
"tnsnames.ora" 30L, 589C written
[oracle@ocm1 admin]$