Where is the Oracle parameter file?
The default location in UNIX for the server parameter file or text initialization parameter file is $ORACLE_HOME/dbs. On Windows, the default location is ORACLE_HOME/dbs.
What is the parameter file in Oracle?
A parameter file is a file that contains a list of initialization parameters and a value for each parameter. You specify initialization parameters in a parameter file that reflect your particular installation. Oracle supports the following two types of parameter files: Server Parameter Files.
Which parameter file is editable and readable?
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. By default, if you do not specify PFILE in your STARTUP command, Oracle will use server parameter file (SPFILE).
What is parameter file in DBA?
Parameter file is a text or binary to store the database initialization parameters. The oracle instance reads the parameter file during startup which are then used to control the behavior of database instance and many other aspects as well.
How do I find my Spfile?
The SPFILE file name is spfile SID . ora and is located in the ORACLE_HOME \database directory.
What is the path of ORACLE_HOME?
By default, the PATH variable already includes the path \bin after you install the Oracle client software.
What are the parameters in Pfile?
PFILE stands for the parameter file. It is a text file which can be modified by a text editor. With the help, PFILE Oracle server start an Oracle Instance….
- spfileSID. ora (SPFILE)
- Default SPFILE (SPFILE)
- initSID. ora (PFILE)
- Default PFILE (PFILE)
What are parameters in database?
Parameters are used to exchange data between stored procedures and functions and the application or tool that called the stored procedure or function: Output parameters allow the stored procedure to pass a data value or a cursor variable back to the caller. User-defined functions cannot specify output parameters.
How can I tell if Oracle is using Pfile or Spfile?
Another way to find would be set the parameter with scope=spfile, if database was started with spfile one will be able to set the value if it’s started with pfile you will see the “ORA-32001: write to spfile requested but no SPFILE specified at startup”.
What is initialization parameter explain?
Initialization parameters are stored in an initialization parameter file and can be applied to all database instances on a server. Parameters that affect system performance involve cursor sharing, the policy that determines work area size, the number of concurrent processes, and memory area sizes.
Is Oracle using Spfile?
In Oracle9i, Oracle has also introduced the ‘SPFILE’, which is a binary file stored on the database Server. Changes which are applied to the instance parameters may be persistent across all startup/shutdown procedures. Starting Oracle9i, you can startup the instance using either a spfile or an init. ora file.
What is Pfile Spfile in Oracle?
A SPFILE, Server Parameter File, is a server managed binary file that Oracle uses to hold persistent initialization parameters. Since the database uses this file during startup all parameter changes persist between shutdowns. A SPFILE is created from a PFILE using one of the following commands.
How to create a pfile in Oracle 12c?
Starting with Oracle Database 12c Release 1 (12.1.0.2), you can create a text parameter file when the current container is a PDB. In this case you must specify a pfile_name. The database creates a text file that contains the parameter settings for the PDB.
How are parameter files created in Oracle Database?
In this article, I will explain the parameter files that are very important for Oracle database. This parameter is created when opening the Oracle instance and then we can change the contents of these parameter files either dynamically or statically.Oracle In our database there are 2 identical parameter files, which are named SPFILE and PFILE.
How to use Oracle 12c data pump with a parameter file?
This example is a parameter file that exports the DEPARTMENTS and EMPLOYEES tables of the HR schema: Open a command-line prompt and go to the directory where your parameter file is saved. Launch Data Pump Export with your parameter file:
When to use preferred in Oracle Database 12c?
The new PREFERRED value is now the default, if the COMPATIBLE init parameter is set to 12.0.0.0 or higher. PREFERRED makes LOBs to be stored as SecureFiles per default, unless the BASICFILE clause is explicitely used when creating the table, or the tablespace is not ASSM.