How to do "Multiplexing of Control Files" through spfile ( server parameter file) in Oracle 11g

Step 1) To perform "Multiplexing of Control Files" through spfile ( server parameter file)" first we need to create spfile from pfile.

Example to create spfile from pfile: -


                                     create spfile from pfile

 Step 2) Copy the control files in physical location from 'cp' command.

Note: - At present, I have 2 control files,  I will add one more Control files in the same location.


 Example: - 
physically addition of control file

 Now you can see from above output control04.ctl file has been physically added successfully under /u01/app/oracle/oradata/prod/control04.ctl location.

Step 3) Now you need to set the same through alter command.

a)  first shut down the database

                                        Shut Immediate

b)  Startup (Start the database through spfile)
                                   
                                   
Startup of database through spfile

Command to check database is running through spfile

Step 4) Now through SQL prompt alter the changes.

Example: -



Step 5) Now shutdown and start the database again and check the status of added Control file.

 Example: -

  a)  Shut Immediate

  b) Startup
                                                         


c) Status of the added Control file

As we can check from above output 4th control files has been added and the database is also up and running.

Thank you!!



Comments

Post a Comment

Popular posts from this blog

How to Add, Resize, Drop and Rename of a datafile in Tablespace

Image
                                       How to Add, Resize, Drop and Rename a datafile in Tablespace In order to create a data file first, need to create a tablespace, To know how to create a tablespace  Click here To demonstrate, I will use USERS tablespace to Add,  Resize, Drop and Rename a data file. First, we can check how many data files are present under USERS tablespace through below command. Command: - select name from v$datafile; We can see from above output only a single data file is present under USERS tablespace. Addition of Datafile: - Command to add a datafile: - alter tablespace users add datafile '/u01/app/oracle/oradata/prod/users02.dbf' size 50m; The new data file has been added to my USERS tablespace. Resize of a Datafile: - Command to resize the datafile: - alter database datafile '/u01/app/oracle/oradata/prod/users02.dbf' resize 20m; Renaming of a Datafile: - We have a few steps to rename a data file: -
Read more

Oracle "Redo log Groups addition/deletion" | Karan Rajpoot

Image
                    Oracle "Redo log Groups addition/deletion" Step 1) To add redo log group first we will check the log groups, members details, location, and size. Example: - From the above output, we can see we have 3 groups and inside every group, we have 1 member each of size 50 MB and the location is /u01/app/oracle/oradata/karan/ Step 2) Now we will add one group and check the status of that group. Example: - Now again we can check the details of log groups and member. Now the 4th group and a member of 50 MB has been added successfully. Step 3) Now I will add one more member to the 4th log group. Example: - We can see from the above output that in group 4, now 2 members are there. Steps to drop the latest added group and member Note: - We cannot drop CURRENT members as shown in the above output, So I will add a new member in group 3 and then I will drop that member. Step 1)  Addition of new
Read more