- Configuration Type
- Database manager
- Applies To
-
- Database server with local and remote clients
- Client
- Database server with local clients
- Partitioned database server with local and remote clients
- Satellite database server with local clients
- Parameter Type
- Configurable
- Default [Range]
- search [disable, known, search]
- Related Parameters
- Search Discovery Communications Protocols (discover_comm)
From an administration server perspective, this configuration parameter
determines the type of discovery mode that is started when DB2ADMIN
starts.
- If discover = SEARCH when DB2ADMIN starts, then search
discovery connection managers for each of the protocols specified in
discover_comm are started. In addition, connection managers
for each of the protocols specified in the DB2COMM registry variable are
started. This allows the administration server to handle search
discovery requests from clients. SEARCH provides a superset of the
functionality provided by KNOWN discovery. When discover =
SEARCH, the administration server will handle both search and known discovery
requests from clients.
- If discover = KNOWN when DB2ADMIN starts, then only the
connection managers specified in the DB2COMM registry variable are
started. These connection managers handle KNOWN discovery
requests.
- If discover = DISABLE when DB2ADMIN starts, then the
administration server will not handle any type of discovery request.
From a server instance perspective, if discover = DISABLE then
the information for this server instance is essentially hidden from
clients. The administration server will not package information about
this instance when a known discovery request is issued against this system by
any client.
From a client perspective, one of the following will occur:
- If discover = SEARCH, the client can issue search discovery
requests to find DB2 server systems on the network. Search discovery
provides a superset of the functionality provided by KNOWN discovery.
If discover = SEARCH, both search and known discovery requests can
be issued by the client.
- If discover = KNOWN, only known discovery requests can be
issued from the client. By specifying some connection information for
the administration server on a particular system, all the instance and
database information on the DB2 system is returned to the client.
- If discover = DISABLE, discovery is disabled at the
client.
The default discovery mode is SEARCH.
For the numeric equivalents and API constants for these values, refer to
the Administrative API Reference.
For more information on DB2 Discovery, refer to the Quick
Beginnings manual appropriate to your platform.