1) First Install Linux and then ORACLE 10g R2 on VMware Machine.
Note: While Installing Oracle Software. You will find option like Install Software only. Click On it. We will create Database later.
2) In this case I created Linux server called Primary
Note: IP Address of Primary Machine is 192.168.2.151 and in active mode And host name is Primary.dbasagar.com, use same IP address and hostname at the time of installing linux , only if you are using Bridged network
3)Now goto VMware storage location on your host (C:UsersAdministratorDocumentsVirtual Machine)
You will find folder called Primary ( Since my machine name is Primary)
Create a folder called Standby
4) Copy all files on Primary folder and paste those into Standby
5) Open standby folder and open vmware configuration file as shown in fugure
find line name DisplayName, Chang primary to Standby
6) Now Go to VMware press ALT+F and the click on open. Go to Standby local open vmdk file as shown
in figure
Now you have a two virtual machines called Primary and standby. Then Power on Standby Machine and leave Primary Power off. we need to change certain parameters
And log in as root user
7) Go to Applications –> system settings –> Network
a) Double click on eth0
A new window will open – change IP address 192.168.2.151 to 192.168.2.152 ( Since we just copied
whole content of Primary to standby)
b) on same window you have tab called Hardware Device as show in figure, click on in and click Probe for
once to change MAC address finally click OK
c) Now click on DNS tab on Main window as show in figure and change Host name from
Primary.dbasagar.com to Standby.dbasagar.com
d) Now click on Devices tab and finally click on activate and then YES and click on OK
Your eth0 device is now active mode. Close Net configuration window and log off and log in again as root user
8) Open Terminal and issue following commands
# hostname
#vi /etc/hosts
make entries as show in figure
9) Now power on Primary Machine and log in as root user and Open Terminal and issue following
commands
# hostname
#vi /etc/hosts
make entries as show in figure
10) Now log out of Root user and log in as oracle on both Machines
Create database called PROD using DBCA tools (on Primary Machine)
(Clickhere to know how to create database using DBCA)
11) Connect to database as sysdba (on Primary Machine)
12) Open another Terminal
Is below command as shown in figure
$ netca
Listener Configuration –> Add –> Listener Name [ PROD ] –> TCP –> PORT 1521 –> Next –> Finish
13) Now Issues netmgr command to make entries on tnsname.ora
$netmgr
click on listeners –> PROD –> Database services –>
add database make entires PROD and PROD –> again click on add database –> Save and EXIT
14) Again issue netca
Local Net service configuration –> add –> Name –> PROD –> TCP –> Host Name and PORT 1521 –> YES, Perform test –> test successful–> NEXT –> Finish
15) Now Ping TNS using below command
$tnsping PROD
16) Go to Directory $ORACLE_HOME/network/admin
edit tnsnames.ora as show in figure
copy selected content and past it into Standby machine tnsnames.ora file and save it
17) Now Ping TNS using below command
$tnsping PROD
We are all set. Now testing
18) Go to Primary machine
log In as as sysdba
create a user called sagar and grant roles as shown in figure
19) Now go to Standby and log In sagar user
$ sqlplus sagar/[email protected]
Yes… Now you are connected to Database PROD which is located at Primary Machine through Standby Machine
20) create a table called test and insert some records in it and issue commit;
21) Now go to Primary Machine. check that records are stored are not as a sys user or Sagar user
In this way we can connect to database as remotely. In this way only developers will connect to database
