1.???????工作環境需求 A. The operating system user?adm must be able to log on to the secondary database. ??? B. The R/3 table DBCON must be maintained. ??? C. The correct database library 'dboraslib.' must exist in the kernel directory.?
Connect??to SQL Server database?Prerequisite: At least one Windows application server must be available on the R/3 system and the DBSL dynamic library (DLL) dbmssslib.dll must be installed on this server. This dll can be downloaded from the SAP Service Marketplace. dbmssslib.dll 2.???????配置連接信息 配置TCODE: dbco 任何配置信息都存儲在DBCON表中. 配置示例: A.??????訪問MSSQL的配置示例(參見SAP Notes 178949) CON_NAME:?
DBMS: MSS
USER_NAME:?
PASSWORD:??
CON_ENV: MSSQL_SERVER=?MSSQL_DBNAME= ?? db_user could be sapr3 for example if the server is running R/3.??The password field may be blocked from view by asterisks in sm30. USER_NAME can be left blank in order to use integrated security (4.6d kernel and later).??In that case make sure that the OS User running R/3 has the required privilege on the remote server.??A dummy password must be entered in sm30, it will not be used when the user name is blank.

• Specifying the server name

???????????The server name is simply the name of the SQL Server or named instance i.e. the hostname (for a default instance), or?\
Starting with release 6.40 however there are some special considerations that should be taken into account.??When running with kernel release 6.40 or later, the R/3 system will prepend a protocol specifier to the server name.??Example:
?? 1. For a server running on the same server:
????????????np:
??2. For a remote server:
????????????tcp:
This forces the connection to be made with a named pipes and tcp/ip protocols respectively.
When specifying the server name you can override this by setting your own protocol (tcp: or np:), or you can make R/3 avoid setting any prefix by using simply :?- a colon in front of the server name.

B.??????訪問ORACLE的配置示例() ?? Connection name????????logical name of the connection ???? DBMS?????????????????? ORA ???? User name??????????????Oracle users ???? DB password????????????password for the above-mentioned?Oracle user ???? Conn.info??????????????TNS alias ???? Permanent??????????????Usually should not be set for a?secondary connection. 3.???????程序中如何使用

例程一
report zdbcon .
data: dbn(128).
EXEC SQL.
CONNECT TO 'DAN1'
ENDEXEC.
EXEC SQL.
SET CONNECTION 'DAN1'
ENDEXEC.
EXEC SQL.
SELECT db_name() INTO :DBN FROM SVERS
ENDEXEC.
write: / 'current database name', dbn.?
DAN1在DBCON表中配置
CON NAME DAN1?
DBMS MSS?
USER NAME iis_log?
PASSWORD CON ENV?
MSSQL_SERVER=tcp:###.###.###.### MSSQL_DBNAME=iislog?

例程二
Here is an example for how to connect to another server with CON_NAME=BSK.??The example assumes BSK is running R/3:

?EXEC SQL.
??CONNECT TO 'BSK'
ENDEXEC.
EXEC SQL.
??SET CONNECTION 'BSK'
ENDEXEC.
EXEC SQL.
??SELECT db_name() INTO :DBN FROM SVERS
ENDEXEC.
WRITE: / 'current database name', DBN.
EXEC SQL.
??SET CONNECTION DEFAULT
ENDEXEC.
EXEC SQL.
??SELECT db_name() INTO :DBN FROM SVERS
ENDEXEC.
WRITE: / 'current database name', DBN.?

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