MX 2.x)

Overview of MXCS

HP NonStop SQL/MX Connectivity Service Manual—524944-008

1-5

Connection Mapping

MXCS maps the client data source name in an incoming connection request to the

server data source name (names are case sensitive). If the name matches but the

server data source is not started, the connection request is rejected. If the server data

source name does not exist, the association server routes the connection to the default

data source. If the default data source is not started, the connection request is

rejected.

After a data source name is assigned, the association server uses any MXCS server

that was previously used by the same user ID. If no such server is found, the

association server assigns the first available server to the connection and reinitializes

the user context to the one defined in the configuration for the data source name on

the MXCS SQL server.

Figure 1-2. Connection Data Flow

Tdm_Default_DataSourceOther Data Source: DS1

1. Request connection to DS1

2. Connection to DS1 granted

3. Client connects to server

4. Server accepts connection

Client

Application

MXCS

Association

Server

MXCS

SQL Server

MXCS

SQL Server

Client API

Client Driver Manager

Client Driver

VST002.vsd