Guidelines

How do I change the Spfile location in Oracle RAC?

by Rhyley Bryan

How do I change the Spfile location in Oracle RAC?

Generally, we don’t change SPFILE location of a single-instance database, because it should be found in the default location, $ORACLE_HOME/dbs/spfile$ORACLE_SID….Here are the steps to change SPFILE location:

  1. Backup Original SPFILE.
  2. Create SPFILE in New Location.
  3. Point to New SPFILE in PFILE.

How do I move 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.

How do you change Spfile parameters?

In order to modify the spfile in oracle database, do one of the following:

  1. Use the ALTER SYSTEM command to modify the SPFILE currently in use. To determine if an spfile is being used: SQL> select value from v$parameter where name=’spfile’
  2. Use the export method. Export the SPFILE to a PFILE.

How do I create a pfile in another location?

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 = ‘$ORACLE_HOME/dbs/my_pfile. ora’ FROM SPFILE; CREATE PFILE = ‘$ORACLE_HOME/dbs/my_pfile.

How do I change the ASM Spfile?

How to Modify an Existing ASM Spfile in a RAC Environment

  1. Shutdown +ASM2 instance on second node, or if multiple node RAC, all ASM instances on each node except node 1:
  2. Then, on node 1, connect to +ASM1 instance.
  3. Create a modified ASM pfile.
  4. Start up the +ASM1 instance on the first node:

How do I transfer Spfile to ASM?

Moving SPFILE from file system to ASM (ORACLE RAC11g)

  1. Create spfile in ASM “+RACDB_DATA” disk group.
  2. New spfile has been created in ASM.
  3. Modify initracdb11.ora on rac1 and initracdb12.ora on rac2 files to point to location in ASM.
  4. Update OCR with new SPFILE location.
  5. Rename any existing spfiles in $ORACLE_HOME/dbs.

How do I migrate Spfile to ASM?

How do I change the Spfile parameter in RAC?

How do I add parameters to Spfile?

If you want to make a change to a parameter in the spfile without affecting the current instance, you can do so using the SCOPE=SPFILE option of the ALTER SYSTEM statement. This is useful when you want to make a change starting from the next startup and not for the current instance.

How Pfile does affect Spfile?

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).

How do I find my Spfile?

The SPFILE file name is spfile SID . ora and is located in the ORACLE_HOME \database directory.

How do I find my Pfile ASM?

But if ASM instance is not up, let’s see where we can find its location.

  1. From GPnP tool.
  2. From alert.log.
  3. $ORACLE_HOME/dbs.
  4. Backup the ASM SPFILE.

Is there a way to create a new spfile?

There’re several ways that can create a new SPFILE. You can always create a new SPFILE to the new location from the current one, no matter whether the instance is running or not. File created. File created. Please note that, the @ sign in the statement stands for $ORACLE_SID.

What happens when the default spfile is missing?

Since the default SPFILE is missing, the database will turn to the default PFILE to startup the database. Once PFILE is used, it will redirect the database to the new SPFILE. This approach is based on the order of locating the initialization parameter file by examining file names in a specific order.

Where is the spfile file stored in Oracle?

Beginning with Oracle9i, Oracle introduced the concept of the server parameter file. This file, known as SPFILE , differs from the standard INIT.ORA file in a number of ways: It is a binary file, rather than a text-based file. It is stored on the server, rather than on a client machine.

How do I export a spfile to a pfile?

Use the export method. 1. Export the SPFILE to a PFILE. The resulting PFILE will be an editable ASCII file. Examples: The PFILE is created in directory $ORACLE_HOME/dbs and named init [SID].ora.