Skip to main content

Create Control File

I keep forgetting the syntax for create control file, thought it would help me and others for the syntax and the steps to create.

STEPS:

1. Shutdown the database
2. sqlplus '/as sysdba'
3. startup nomount
4. Create Control file (syntax below)
5. alter database open

CREATE CONTROLFILE REUSE DATABASE "anydatabasename" NORESETLOGS NOARCHIVELOG
MAXLOGFILES 50
MAXLOGMEMBERS 3
MAXDATAFILES 1000
MAXINSTANCES 8
MAXLOGHISTORY 500
LOGFILE
GROUP 1 'REDLOG PATH' SIZE 10M,
GROUP 2 'REDLOG PATH' SIZE 10M
DATAFILE
;


EXAMPLE:

CREATE CONTROLFILE REUSE DATABASE "PROD" RESETLOGS NOARCHIVELOG
MAXLOGFILES 50
MAXLOGMEMBERS 3
MAXDATAFILES 1000
MAXINSTANCES 8
MAXLOGHISTORY 500
LOGFILE
GROUP 1 '/APPS/proddata/log01a.dbf' SIZE 10M,
GROUP 2 '/APPS/proddata/log02a.dbf' SIZE 10M
DATAFILE
'/APPS/proddata/a_txn_data01.dbf' ,
'/APPS/proddata/a_txn_data02.dbf' ,
'/APPS/proddata/a_txn_data03.dbf' ,
'/APPS/proddata/a_txn_ind01.dbf' ,
'/APPS/proddata/a_txn_ind02.dbf' ,
'/APPS/proddata/a_txn_ind03.dbf' ,
'/APPS/proddata/a_txn_ind04.dbf' ,
'/APPS/proddata/a_txn_ind05.dbf' ;


If you want to set a new SID for the database then use SET instead of REUSE.
If you want to reset redo logs which will be ideal for a cloned database out of a cold backup.
Labels:

Comments

Post a Comment

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…
21 comments
Read more

'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.
14 comments
Read more

Abnormal Program Termination. An internal error has occurred. Please provide the following files to Oracle Support./ Installing Oracle 10g on Windows 7/Vista

This video will take you through the steps to install Oracle 10g Release 2 on Windows 7 (Same steps work for Windows Vista). Usually if you install Oracle database on window 7/Vista you would get an error,

Abnormal Program Termination. An internal error has occurred. Please provide the following files to Oracle Support.
"Unknown"
"Unknown"
"Unknown"

Follow the steps shown in this video to successfully install Oracle Database on Windows 7/Vista.




31 comments
Read more