Shulou(Shulou.com)06/01 Report--

Oracle Database Link connection error

Case environment:

NODE1:

Operating system: Linux EL5

Oracle: Oracle 10gR2

NODE2:

Operating system: Linux EL5

Oracle: Oracle 11gR2

Case study:

Create a database link to node in node1:

[oracle@rh65 admin] $sqlplus'/ as sysdba'

SQL*Plus: Release 10.2.0.1.0-Production on Tue Jul 8 16:45:01 2014

Copyright (c) 1982, 2005, Oracle. All rights reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0-Production

With the Partitioning, OLAP and Data Mining options

16:45:02 SYS@ test1asm > create public database link prod

16:45:15 2 connect to scott identified by tiger using 'prod2'

Database link created.

The following error occurred while connecting to the node2:

17:32:00 SYS@ test1asm > select * from emp@prod

Select * from emp@prod

*

ERROR at line 1:

ORA-01017: invalid username/password; logon denied

ORA-02063: preceding line from PROD

-- user name and password connection error

1. Make sure that there is no problem with the user name and password on node2.

2. There is no problem with tnsnames configuration.

PROD2 =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.8.24) (PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = prod)

)

)

Solution:

When creating a db-link, cause the user password with ""!

17:37:21 SYS@ test1asm > create public database link prod

17:38:12 2 connect to scott identified by "tiger" using 'prod2'

Database link created.

17:38:23 SYS@ test1asm > select * from emp@prod

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO--7369 SMITH CLERK 7902 17-DEC-80 800 20 7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30 7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30 7566 JONES MANAGER 7839 02-APR-81 2975 20 7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30 7698 BLAKE MANAGER 7839 01-MAY-81 2850 30 7782 CLARK MANAGER 7839 09-JUN-81 2450 10 7788 SCOTT ANALYST 7566 19-APR-87 3000 20 7839 KING PRESIDENT 17-NOV-81 5000 10 7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 7876 ADAMS CLERK 7788 23-MAY-87 1100 20 7900 JAMES CLERK 7698 03-DEC-81 950 30 7902 FORD ANALYST 7566 03-DEC-81 3000 20 7934 MILLER CLERK 7782 23-JAN-82 1300 1014 rows selected.

@ at this point, the problem has been solved!

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