Connections That the Database Server Supports

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Connections That the Database Server Supports

The database server supports the following types of connections to communicate between client applications and a database server.

Connection Type	Windows	UNIX	Local	Network
Sockets	X	X	X	X
TLI (TCP/IP)		X	X	X
TLI (IPX/SPX)		X	X	X
Shared memory		X	X
Stream pipe		X	X
Named pipe	X		X

Note:

When configuring connectivity, consider setting the IFX_LISTEN_TIMEOUT and MAX_INCOMPLETE_CONNECTION configuration parameters. These parameters enable you to reduce the risk of a hostile denial-of-service (DOS) attack by making it more difficult to overwhelm the Listener VP that handles connections. For more information, see Limiting Denial-of-Service Flood Attacks.

UNIX Only

On many UNIX platforms, the database server supports multiple network programming interfaces. The machine notes shows the interface/protocol combinations that the database server supports for your operating system:

Machine Specific Notes:
=======================

1. The following interface/protocol combinations(s) are 
   supported for this platform:

             Berkeley sockets using TCP/IP

End of UNIX Only

To set up a client connection

Specify connectivity and connection configuration parameters in your ONCONFIG file.
Set up appropriate entries in the connectivity files on your platform.
Specify connectivity environment variables in your UNIX start-up scripts or the local and domainwide Windows registries.
Define a dbserver group for your database server in the sqlhosts file or registry.

The following sections describe database server connection types in more detail. For detailed information about implementing the connections described in the following sections, see the following topics: