Why do we need to create spfile from pfile?

Why do we need to create spfile from pfile?

In addition, a DBA may keep copies of this file on their local PC to allow remote startup. A PFILE is necessary in order to create a SPFILE to enable persistent initialization parameters.

How do I start a database using Pfile?

Migrating to spfile from a pfile consists of 2 steps:

1. Create the spfile from the existing pfile using: SQL> CREATE SPFILE FROM PFILE=’d:\init. ora’; File created.
2. Restart the database to start using the newly created spfile. SQL> STARTUP ORACLE instance started.

How do I create ASM Spfile in 12c?

Create database SPFILE Under ASM (Doc ID 413360.1) SQL> create SPFILE=’+DATA/osmdr/spfileosmdr. ora’ from pfile=’/home/oracle/osmdr. init’;

How do I copy Spfile from ASM to filesystem?

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 difference between 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.

Can you start an Oracle database without a pfile?

SPFILE should only be modified through “ALTER SYSTEM SET” command . Editing an SPFILE directly will corrupt the file and the start up of the database or instance will not be possible. As SPFILe is a server side binary file, local copy of the PFILE is not required to start oracle from a remote machine.

Do you need a spfile to start Oracle?

A SPFILE doesn’t need a local copy of the pfile to start oracle from a remote machine. Thus eliminates configuration problems. SPFILE is a binary file and modification to that can only be done through ALTER SYSTEM SET command. Reference: https://sapbasisdurgaprasad.blogspot.com/2011/07/difference-between-pfile-and-spfile-in.html

Can a pfile be modified in a spfile?

SPFILE should only be modified through “ALTER SYSTEM SET” command . Editing an SPFILE directly will corrupt the file and the start up of the database or instance will not be possible. As SPFILe is a server side binary file, local copy of the PFILE is not required to start oracle from a remote machine.

Do you need to start an instance with a non default spfile?

It is not usually necessary to start an instance with a non-default SPFILE. However, should such a need arise, you can use the PFILE clause to start an instance with a non-default server parameter file as follows: Create a one-line text initialization parameter file that contains only the SPFILE parameter.