How to create Database link

Hi all,
While trying to create a database link i am getting the following error:
Create Database Link Failed.
ORA-01031: insufficient privileges
Could you please tell me how to create a database link.
Thanks
Grishma

Hi Grishma,
Login as DBA (SYSTEM or SYS for ex.) in SQL*Plus and run this command:
SELECT *
FROM dba_sys_privs
WHERE grantee = 'USERNAME'
AND PRIVILEGE = 'CREATE DATABASE LINK'
Change the USERNAME by the USER you're trying to create the database link from. (CAPITALS!)
Dimitri

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How to create database link from oracle to sql server

Please help with how to create database link from oracle to sql server
Best regards,
Vishal

Please help with how to create database link from oracle to sql server
Best regards,
Vishal
Hi Vishal,
I found a lof of information regarding how to create a database link from Oracle to SQL Server, please see:
https://www.google.co.in/?gws_rd=cr&ei=vd3XUvGFO8TgkAXqlYCADg#q=how+to+create+database+link+from+oracle+to+sql+server
We discuss SQL Server related issue in this forum. If you have any more question regarding Oracle, please post it in Oracle communities forum for better support.
Regards,
Elvis Long
TechNet Community Support

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For connections between 10.2 and 9.2 the 9.2 end MUST be at 9.2.0.4 or higher. Connections between 10.2 and 9.2.0.1, 9.2.0.2 or 9.2.0.3 are not supported.
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How to create database link between oracle and SQL Server

Hello Everyone,
Here i have Oracle Database 9i and SQL Server 2005 databases.
I have some tables in sql server db and i want to access from Oracle.
How to create a database link between these two servers
Thanks,

Thanks for Everyone,
I was struggle with this almost 10 days....
I created Database link from Oracle to SQL Server
Now it is fine.........
Here i am giving my servers configuration and proceedure how i created the db link...@
Using Generic Connectivity (HSODBC) we can create db link between Oracle and SQL server.
Machine (1)
DB Version : Oracle 9.2.0.7.0
Operating System : HP-UX Itanuim 64 11.23
IP : 192.168.0.31
Host : abcdbt
Machine (2)
Version : SQL Server 2005
Operating System : Windows server 2003 x86
IP : 192.168.0.175
Host : SQLDEV1
User/PW : sa/abc@123! (Connect to database)
Database : SQLTEST (exsisting)
Table : T (“ T “ is the table existing in SQLTEST database with 10 rows)
Prerequisites in Machine (2):
a)     Oracle 10g software
b)     User account to access SQL Server database (sa/abc@123!)
c)     Existing SQL Server Database (SQLTEST)
d) Tables (testing purpose) (T)
Steps:
1)     Install Oracle 10.2.0.1 (Only SW,No need of database) *(Machine 2)*
2)     Create a DSN where your windows Oracle 10g SW resides *(Machine 2)*
Control panel >> Administrative Tools >> Data Source (ODBC) >> System DSN ADD
You can follow this link also.....
http://www.databasejournal.com/features/oracle/article.php/3442661/Making-a-Connection-from-Oracle-to-SQL-Server.htm
I created DSN as
DSN name : SQLTEST
User : SA/abc@123! (Existing user account)
Host : 192.168.0.175 (machine 2)
Already I have 1 database in SQL Server with the name SQLTEST
You can create DSN with different name also (not same as db name also)
3)     Create a hsodbc init file in $ORACLE_HOME\hs\admin *(Machine 2)*
Create init<DSN NAME> file
Ex: initSQLTEST
Copy inithsodbc to initSQLTEST
And edit
initSQLTEST file
HS_FDS_CONNECT_INFO = SQLTEST    <DSN NAME>*
HS_FDS_TRACE_LEVEL = OFF*
save the file....@
4)     Configure Listener.ora *(Machine 2)*
LISTENER_NEW =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.175)(PORT = 1525))
SID_LIST_LISTENER_NEW =
(SID_LIST =
(SID_DESC =
(SID_NAME = SQLTEST) *+< Here SQLTEST is DSN NAME >+*
(ORACLE_HOME = G:\oracle 10g\oracle\product\10.2.0\db_1)
(PROGRAM = hsodbc))
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = G:\oracle 10g\oracle\product\10.2.0\db_1)
(PROGRAM = extproc) )
:> lsnrctl start LISTENER_NEW
5)     Configure tnsname.ora *(Machine 2)*
SQLTEST11 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.175)(PORT = 1525))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = SQLTEST))
(HS=OK)
:> tnsping SQLTEST11
If No errors then conti….
6)     Configure a file *(Machine 1)*
Cd $TNS_ADMIN ($ORACLE_HOME/network/admin)
Create a file
$ vi TEST_abcdbt_ifile.ora
something=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST =192.168.0.175) (PORT=1525))
(CONNECT_DATA=
(SID=SQLTEST))
(HS=OK)
$ tnsping something
$ sqlplus system/manager
Your connected to Oracle database *(machine 1)*
create database link xyz connect to “sa” identified by “abc@123!” using ‘SOMETHING’;
select * from t@xyz;10 rows selected.
Thanks,
Edited by: ram5424 on Feb 10, 2010 7:24 PM

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How to create database links

Hi,
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850520 wrote:
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Hi,
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Yes iam trying to Archive
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http://www.amardeepsidhu.com

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The best thing is always to try it :
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SQL> create database link test connect to test identified by test using 'orcl';
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Synonym created.
SQL> select count(*) from test_tab;
COUNT(*)
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5     return counter;
6* end;
SQL> /
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Connected.
SQL> select count(*) from test_tab;
select count(*) from test_tab
ERROR at line 1:
ORA-01017: invalid username/password; logon denied
ORA-02063: preceding line from TEST
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select test_func from dual
ERROR at line 1:
ORA-01017: invalid username/password; logon denied
ORA-02063: preceding line from TEST
ORA-06512: at "SCOTT.TEST_FUNC", line 4
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SQL> select count(*) from test_tab;
COUNT(*)
         1
SQL> select test_func from dual;
TEST_FUNC
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SQL>

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i want to create one table (Table1)in database B, and then insert data into Table1 select ....from Table2 which is in database A.
i used the create database link (database name) connect to (database) indentified by .....
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http://forum.java.sun.com/thread.jspa?threadID=656868&messageID=3860293#3860293

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Testing...
Failed.
SQL Exception
Repository Error:SQL Exception..
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As I said prior the database link creation should work from within the OWB client (also in 10).
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Ola Amit,
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How to create DB Link??

How to create a database link?
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http://www.ddbcinc.com/askDDBC

Can't create database link when password has special character

I'm trying to execute the following statement within sqlplus
create database link alpha connect to scott identified by tiger! using 'db_alpha'
note that the password for the account has an exclamation point in it. the command fails. I've tried placing the password in quotes (') and double-quotes ("). The double-quotes work, but then the link fails to function properly.
We are required to have a special character in our passwords... so how do I get that special character into the password for the database link?
Thanks in advance,
Darren

for some weird reason, I can't post the reply I want. every time I try, the forum hangs and doesn't save the message. give me a sec...
I have put the password within double quotes... so I'm starting to think the problem is something else. I've been reading other posts regarding creating database links and I've obtained limited results. Here's what I've done, and the results I'm getting.
(names changed to protect the innocent)
My oracle database is on SYSA. I'm on SYSB. I set my TWO_TASK=SYSA and just use sqlplus to connect as user1.
I want to run a command on user2's tables. Normally I would just grant read access to user1 on user2's tables and use a command like
nert spaces to get this to save (weird forum bug here, I can't delete the text to the left)
SQL> sel{color:black}{color}ect * fr{color:black}{color}om u{color:black}{color}s{color:black}{color}e{color:black}{color}r{color:black}{color}2{color:black}{color}.{color:black}{color}m{color:black}{color}y{color:black}{color}_{color:black}{color}t{color:black}{color}a{color:black}{color}b{color:black}{color}l{color:black}{color}e{color:black}{color};
However, user2 is for test data and those tables get dropped and recreated often and it is cumbersome to try to remind everyone to recreate the grants. So I can't trust that user1 will have access to user2's tables. So my goal with the database link is to create a private (for user1 only) database link and access the tables that way, that way I bypass the grant issue. This works out better for me because we only change that password every 2 months. I just recreate the database link once every two months, rather than recreate grants multiple times every week. Well, that's the theory anyway.
Back to creating the database link, I thought my issue was the special character in the password because if I remove the exclamation point everyting works (except that the password is invalid). Below is what it looks like when I do this...
Attempt #1:
SQL> create database link BLAH connect to user2 identified by "tiger" using 'BLAH';
Database link created
SQL> sel{color:black}{color}ect * fr{color:black}{color}om my{color:black}{color}_{color:black}{color}table{color:black}{color}@{color:black}{color}BLAH;
sel{color:black}{color}ect * fr{color:black}{color}om my{color:black}{color}_{color:black}{color}ta{color:black}{color}ble{color:black}{color}@{color:black}{color}BLAH
ERROR at line 1:
ORA-01017: invalid username/password; logon denied
ORA-02063: preceding line from BLAH
So that looks like it's just a password issue. If I put in the correct password... the error changes to this...
Attempt #2:
SQL> create database link BLAH connect to user2 identified by "tiger!" using 'BLAH';
Database link created
SQL> sel{color:black}{color}ect {color:black}{color}* fr{color:black}{color}om my{color:black}{color}_{color:black}{color}table{color:black}{color}@BLAH;
sel{color:black}{color}ect * fr{color:black}{color}om my{color:black}{color}_ta{color:black}{color}ble{color:black}{color}@BLAH
ERROR at line 1:
ORA-02085: database link BLAH.AAA.BB.CCC.DDD connects to
DEVDB.AAA.BB.CCC.DDD
To me, that doesn't make sense. If the link isn't working... how did it get the "invalid username/password" in Attempt #1?
Anyway, in perusing other forum posts, one post said to put in the full text from the tnsnames.ora file instead of the alias. So I do a little cut/paste and try this...
Attempt #3:
SQL> create database link BLAH connect to user2 identified by "tiger!" using
2 '(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = server001.aaa.bb.ccc.ddd)(PORT = 9999)))
3 (CONNECT_DATA = (SERVICE_NAME = devdb)))';
Database link created.
SQL> sel{color:black}{color}ect {color:black}{color}* fro{color:black}{color}m my{color:black}{color}_{color:black}{color}tab{color:black}{color}le{color:black}{color}@BLAH;
sel{color:black}{color}ect {color:black}{color}* fr{color:black}{color}om {color:black}{color}my_{color:black}{color}tab{color:black}{color}le@B{color:black}{color}LAH
ERROR at line 1:
ORA-02085: database link BLAH.AAA.BB.CCC.DDD connects to
DEVDB.AAA.BB.CCC.DDD
Any ideas on what I'm doing wrong?
Darren

How to create Database link

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