Can we create pfile from Spfile?

You can do this with the following syntax. SQL> create pfile from spfile; This will create a PFILE named initSID. ora in your $ORACLE_HOME/database (Windows) or $ORACLE_HOME/dbs (Linux/Unix) directory.

How do I create a pfile from ASM Spfile?

How to move spfile from ASM to filesystem

1. Create pfile from the spfile. First, we will create pfile in filesystem from the existing spfile in ASM.
2. Remove the spfile from ASM. We can now connect the the ASM instance and remove the spfile residing in ASM disk group.
3. Recreate the spfile.
4. Start the database using new spfile.

What is Spfile and Pfile?

SPFILE is a binary file that contains the same information as the old PFILE. SPFILE permits dynamic changes without requiring you to restart that instance. If you choose to use the traditional text initialization parameter file (PFILE), you must specify the PFILE clause when issuing the STARTUP command.

How do I create a pfile from Spfile in RAC?

Steps to Recreate spfile from pfile in ASM

1. STEP 1: Shut down the database cluster.
2. STEP 2: Start only one instance using existing pfile in nomount state.
3. STEP 3: Create spfile on ASM from existing pfile.
4. STEP 4: Shutdown and start the database.
5. STEP 5: Check the status of the database.

How to create a spfile from a pfile file?

When you use a server parameter file, you can specify in an ALTER SYSTEM SET parameter statement that the new parameter value should be persistent So in short, spfile is more convenient for managing the parameters in Oracle database.Also it can be backed up using RMAN Now lets see how to create spfile from pfile.

When does a pfile file need to be created?

PFILE is not require for database if spfile is exists. Spfile file is created when the database is installed and the pfile file is not created automatically. The pfile file is created from the spfile because it is sometimes easier to change a parameter at the pfile because the Pfile file is textual.

How to change spfile parameter values in pfile?

Here is an alternative procedure for changing SPFILE parameter values using the above method: Export the SPFILE with: CREATE PFILE=‘pfilename’ FROM SPFILE = ‘spfilename’; Edit the resulting PFILE with a text editor Shutdown and startup the database with the PFILE option: STARTUP PFILE=filename

Where do I find the spfile file in Oracle?

This file is typically located under the $ ORACLE_HOME/dbs directory and spfile .ora format. We can say that this file is Oracle Instance configuration file that all parameters are kept for startup of Oracle instance