dataguard config

Hi,

We have multiple dataguard environments with 11g and 12c versions.

I would like to know how the entries get deleted from v$dataguard_config.

I have 3 instances here where 2 are standby but recently one of the standby got decommissioned.

I updated log_archive_config and log_archive_dest_* to null and log_archive_dest_state_* to DEFER... also removed fal_server.

But I still see all entries in v$dataguad_config.

basically i want to remove from data guard configuration for one of database..

I cannot set to no_dgconfig for log_archive_config as one standby still active.