How to connect to another db using stored procedures?
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16-10-2019 - |
문제
I need to get some data from an external db and make some calculations with it in another db, is it possible to connect to an external db from a stored procedure? Thanks guys.
PS.
Im using Oracle and both databases are in the same server.
해결책
You want to use a Database Link (DBLink).
http://www.stanford.edu/dept/itss/docs/oracle/10g/server.101/b10759/statements_5005.htm
http://psoug.org/reference/db_link.html
-- create tnsnames entry for conn_link
conn_link =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = perrito2)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = orabase)
)
)
CREATE DATABASE LINK conn_user
USING 'conn_link';
SELECT table_name, tablespace_name FROM user_tables@conn_user;
@conn_user on the end of a procedure or table name will tell the pl/sql engine to query the db link specified for that info.
다른 팁
yes, you can, you can read data from about any database using dg4odbc. Any odbc complient database can be connect to and Oracle database providing you can find a working odbc driver for out platform. .odbc.ini and $ORACLE_HOME/hs/admin are your configuration locations.