What is the difference between Server Parameter File(SPFile.ora) and Pfile(init.ora) file in Oracle database?
And what is the advantage of Server parameter file pfile?
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meda Changed status to publish 08/03/2022
Both SPFILE and PFILE are Oracle server initialization parameter files.
When an oracle server instance starts it reads the initialization parameters.
The contents of the parameter files includes but not limited to :
- The name of the database instance
- list of instance parameters
- The name and location of control files
- SGA Memory allocations
- Log archive and database recovery file location information
The difference between SPFILE and PFILE is:
- PFILE is a text file that can be modified manually but SPFILE is a binary file and can not modified manually.
- When oracle database is installed SPFILE is the default parameter file and then we create PFILE from SPFILE.
- PFILE is a backup of SPFILE.
- on SPFILE file parameter values changes is made using ALTER SYSTEM command or by creating SPFILE from PFILE after making changes on PFILE.
Note: We can create SPFILE from PFILE and Vice versa.
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meda Selected answer as best 18/02/2022