Altering the Database Instance with BR*Tools 

Use

You can use BR*Tools  for Oracle to alter the database instance as follows:

·        Switch the redo log file

·        Force a database checkpoint

·        Set archivelog mode

·        Set noarchivelog mode

This section describes how you alter the database instance.

Altering the database instance is part of Instance Management with BR*Tools.

For more information on the approach to database instance management, see Instance Management.

Prerequisites

Some steps in this procedure only apply if your database is an Oracle Real Application Cluster (RAC). These are marked “RAC only.”

Procedure

...

       1.      Start the procedure using BRGUI or BRTOOLS, or from the command line:

¡        BRGUI or BRTOOLS:

                                                  i.       Choose Instance Management → Alter database

BRGUI or BRTOOLS displays the menu BRSPACE options for alter database instance, where you specify the options with which you call BRSPACE.

                                                ii.       Set the required options:

Menu Entry	Equivalent BRSPACE Command Option
BRSPACE profile (profile)	-p|-profile
Database user/password (user)	-u|-user
Alter database action (action)	-f dbalter -a|-action
Database instance (instance)	-f dbalter -i|-instance
Confirmation mode (confirm)	-c|-confirm
Message language (language)	-l|-language
BRSPACE command line (command)	This shows you the BRSPACE -f dbalter command that is to be executed using the current settings.

                                               iii.       Choose Continue.

BRGUI or BRTOOLS prompts you to start BRSPACE.

                                               iv.       Choose Continue to start BRSPACE.

¡        Command line:

...

Enter at least the following command:

brspace –f dbalter

You can enter more parameters, including the instance name and action, if required. For more information, see BRSPACE -f dbalter.

Whichever way you start the procedure – with BRGUI or BRTOOLS, or from the command line – you can use quick mode if you know the object name, in this case the instance name. For more information, see How to Use BR*Tools.

BRSPACE starts and you see a message that includes Start of BRSPACE processing. From now on, BRSPACE writes a detail log.

BRSPACE displays the Alter database instance main menu.

       2.      If you have already entered the instance name and action, continue with step 5 (quick mode).

       3.      Choose or confirm the required action:

¡        Switch redo log file

¡        Force database checkpoint

¡        Set archivelog mode

¡        Set noarchivelog mode

If you already chose an action in step 1, this action is set to the default.

RAC only: BRSPACE displays the List of database instances for alter, unless you have already entered the instance name.

List Entry	Meaning
Pos.	List sequence number
Name	Instance name
Number / Thread	Instance number and thread
Status	Instance status
Start time	Time the instance was started
RedoSeq	Log redo sequence number
SapConn	Number of SAP connections

       4.      RAC only: select a database instance or multiple database instances.

BRSPACE displays the menu Options for alter of database instance.

In normal (that is, non-RAC) systems, BRSPACE automatically selects the name of the single instance for you.

       5.      Set the required options:

Menu Entry	Meaning
Current archivelog mode (mode) – display only	-f dbalter -m|-mode
Alter database action (action) – display only	-f dbalter -a|-action
Force instance shutdown (force)	-f dbalter -f|-force
SQLPLUS command (command)	The SQL command that is to be executed using the current settings. For more information, see your Oracle SQL documentation.

       6.      To start processing with the selected options, choose Continue.

Results

Check the results in the BRSPACE logs.

·        The summary log space<DBSID>.logdisplays the return code.

·        The detail log s<encoded timestamp>.dba displays the details.

For more information on how to view the logs with BR*Tools, see Showing Logs and Profiles with BR*Tools.