『ORACLE』 DBLINK（11g）

使用tnsnames.ora

SQL> grant create database link to scott;

Grant succeeded.

SQL> conn scott/tiger
Connected.

SQL> create database link lk connect to hr identified by hr using 'enmo1';

Database link created.

SQL> select * from tab@lk;

TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
COUNTRIES TABLE
DEPARTMENTS TABLE
EMPLOYEES TABLE
EMP_DETAILS_VIEW VIEW
EMP_SAL_CHANGE TABLE
JOBS TABLE
JOB_HISTORY TABLE
LOCATIONS TABLE
REGIONS TABLE
SP_LOGERR TABLE

10 rows selected.

SQL> conn hr/hr
Connected.
SQL> select * from tab;

TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
COUNTRIES TABLE
DEPARTMENTS TABLE
EMPLOYEES TABLE
EMP_DETAILS_VIEW VIEW
EMP_SAL_CHANGE TABLE
JOBS TABLE
JOB_HISTORY TABLE
LOCATIONS TABLE
REGIONS TABLE
SP_LOGERR TABLE

10 rows selected.

使用easy connect

SQL> create database link d_1 connect to scott identified by tiger using'192.0.2.5:1521/enmo1';

Database link created.

SQL> select * from tab@d_1;

TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE

SQL> conn scott/tiger
Connected.
SQL> select * from tab;

TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE