How do I drop a Spfile?
You can remove or delete/reset spfile parameter in Oracle Database using alter system reset command. After changing the parameter you need to restart the database. Since spfile is a binary file you can’t open and change it’s values using vi editor in Linux.
Where is the init ora file located?
ora files reside in your $ORACLE_HOME/admin/$ORACLE_SID/pfile directory, with one init. ora file for each instance: Init.
How do I remove hidden parameters from Spfile?
A parameter can be removed from an spfile by issuing: ALTER SYSTEM RESET “_some_hidden_parameter” scope = spfile; You will likely have to stop and start the instance(s) to have the changes take effect.
How do I create a pfile?
A PFILE is necessary in order to create a SPFILE to enable persistent initialization parameters. If you already have a SPFILE, a PFILE can be generated from it using one of the following. CREATE PFILE FROM SPFILE; CREATE PFILE FROM SPFILE = ‘production. ora’; CREATE PFILE = ‘$ORACLE_HOME/dbs/my_pfile.
Where can I find Spfile in Oracle?
The server parameter file (SPFILE) is created from the initialization response file, then the initialization response file is renamed. The SPFILE file name is spfile SID . ora and is located in the ORACLE_HOME \database directory.
Where is Oracle initialization parameter file?
$ORACLE_HOME/dbs
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.
Where is Tnsnames Ora on Linux?
Answer: The tnsnames. ora file in UNIX/Linux is by default in the $ORACLE_HOME/network./admin. tnsnames.
How do you remove hidden parameters?
What are hidden parameters in Oracle?
Don Burleson. Note: Oracle hidden parameters are undocumented and unsupported by Oracle. WARNING! Using undocumented parameters without the consent of Oracle can make your system un-supported and you may be on your own if you experience data corruption.
Where can I place the spfile file?
The SPFILEresides in the ORACLE_HOME/dbsdirectory; however, users can place it anywhere on their machine as long as it is specified in an initialization parameter file. See Also: Oracle Database Administrator’s Guidefor more information about creating the server parameter file
What happens if spfile is not at the default location?
Please note that, if SPFILE is not at the default location, you might get ORA-01565: error in identifying file ‘?=/dbs/[email protected]’ Or vice versa. File created. Oracle use the default files to operate with. Normally, we don’t directly use PFILE to startup a RAC database, because PFILE is just a pointer to the location of SPFILE for a RAC node.
What is the value of the parameter spfile?
The value of this parameter is the name of the current server parameter file ( SPFILE) in use. This parameter can be defined in a client side PFILE to indicate the name of the server parameter file to use. When the default server parameter file is used by the server, the value of SPFILE is internally set by the server. The SPFILE…
What is the default location of pfile on Windows?
The default location of PFILE on Windows truly depends on ORACLE_BASE. As you can see, they’re somewhat different on path between SPFILE and PFILE on Windows. If you create the parameter file without specifying any location, the online SPFILE used by a running instance or the default SPFILE will be used to create PFILE to its default locations.