ISINSTANCE_MODIFIABLE FOR Parameter DG_BROKER_START = True Or False ? (Doc ID 2104324.1)

Last updated on FEBRUARY 14, 2017

Applies to:

Symptoms

Tried to alter the dg_broker_start per instance level but it failed with below error:

$ oerr ora 16544
16544, 00000, "modifying DG_BROKER_START requires SID='*' qualifier"
// *Cause: The setting for the DG_BROKER_START parameter must be exactly
// the same on all RAC database instances. The SID='*' qualifier
// was required in the command.
// *Action: Reenter the command using the SID='*' qualifier.

That means setting of these parameter can not be set different for every instance. So this should be same on all RAC instances.

But When checked v$parameter.ISINSTANCE_MODIFIABLE shows TRUE for 'dg_broker_start' where it is supposed to be FALSE

SQL> select ISINSTANCE_MODIFIABLE from v$parameter where name='dg_broker_start';

ISINS
-----
TRUE

Cause