Skip to main content

How to clone an Express/OFA instance

First make sure that the OS and its Parameters are set to the same values as the source system. Copy the entire Express and OFA installation to the destination(Clone) server. Retain its directory structure.

Follow the steps below to configure the Clone.

1. Got to the directory where you have all your database files by default it will be under

ORACLE_HOME/<>dba name<>/users/<>workstation name<>

2. Open the cfg file for the current workstation/analyst/db.

3. Notedown the path mentioned for variable "OFASYSCFPATH"

4. Goto OFASYSCFPATH

5. Open ofasyscf.cfg

Change SHAREDHOST and SUPERHOST to the destionation ipadress

6. Note the path for super user database and move on to step 7.

7. Open the database database using Express administrator.

Browser for user.catalog under Variables tree (If there is no user.catalog then move )

Goto data section, under this modify the ipaddress for all the databases to the destination address.

Notedown the databases and its path.

8. Perform this step for each database found in step 7.

a. Open the database and follow step 6.


Once the configuration is done, start the express server and your OFA is ready to be accessed.

Comments

Anonymous said…
Good dispatch and this post helped me alot in my college assignement. Gratefulness you seeking your information.
Anonymous said…
Good post and this post helped me alot in my college assignement. Thank you seeking your information.
Mithun Ashok said…
Hi,

Thanks for your response. Let me know if you need more information.

Mithun

Popular posts from this blog

SQL Interview Questions on Subqueries

SUB Queries:
1. List the employees working in research department 2. List employees who are located in New York and Chicago
3. Display the department name in which ANALYSTS are working
4. Display employees who are reporting to JONES
5. Display all the employees who are reporting to Jones Manager
6. Display all the managers in SALES and ACCOUNTING department
7. Display all the employee names in Research and Sales Department who are having at least 1 person reporting to them
8. Display all employees who do not have any reportees
9. List employees who are having at least 2 reporting
10. List the department names which are having more than 5 employees
11. List department name having at-least 3 salesman
12. List employees from research and accounting having at-least 2 reporting
13. Display second max salary
14. Display 4th max salary
15. Display 5th max salary  -- Answer for nth Max Salary
Co-Related Subqueries:
16. Write a query to get 4th max salary from EMP table
17. Write a query to get 2nd…

Answers for SUB Queries

1. SQL> select empno, ename from emp where deptno=(select deptno from dept where dname='RESEARCH');


2. SQL> select empno, ename from emp where deptno in (select deptno from dept where loc in ('NEW YORK','CHICAGO'));

3. SQL> select dname from dept where deptno in ( select deptno from emp where job ='ANALYST');

4. SQL> select empno, ename, mgr from emp where mgr = (select empno from emp where ename='JONES');

5. SQL> select empno, ename, mgr from emp where mgr = (select mgr from emp where ename='JONES')

6. SQL> select empno, ename, job from emp where deptno in ( select deptno from dept where dname in ('SALES','ACCOUNTING'))

7. SQL> select empno, ename, job from emp where deptno in ( select deptno from dept where dname in ('SALES','RESEARCH')) and empno in (select mgr from emp)

8. SQL> select empno, ename from emp where empno not in ( select mgr from emp where mgr is not null)

9. select…

'Linux-x86_64 Error: 28: No space left on device' While trying to start the database -- Error

SQL> startup mount pfile='/tmp/initdlfasp12.ora'
ORA-27102: out of memory
Linux-x86_64 Error: 28: No space left on device


This as you can see is on Linux x86 with 64 bit processor. We got this error after we changed SGA on 10gR2 database. So was sure that this is something to do with the OS.

Parameters to check for this are shmall.

shmall is the total amount of shared memory, in pages, that the system can use at one time.

$cat /proc/sys/kernel/shmmax
53687091200

$ getconf PAGE_SIZE
4096

As per Oracle SHMALL should be set to the total amount of physical RAM divided by page size.

Our system has 64GB memory, so change kernel.shmall = 1024 * 1024 * 1024 * 64 / 4096 = 16777216


Once this value is calculated you can modify Linux system configuration file directly.

$ su - root
vi /etc/sysctl.conf file:
kernel.shmall=16777216

and

# sysctl -p

Once this is done the database was started without any problem.