RE: ok for the last 18 yrs in using oracle I must have been asleep, "implied database link"
- From: D'Hooge Freek <Freek.DHooge@xxxxxxxxx>
- To: "bertrand.guillaumin@xxxxxxxxxx" <bertrand.guillaumin@xxxxxxxxxx>, "robertgfreeman@xxxxxxxxx" <robertgfreeman@xxxxxxxxx>, "TESTAJ3@xxxxxxxxxxxxxx" <TESTAJ3@xxxxxxxxxxxxxx>, "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 18 Feb 2010 15:24:33 +0100
Freek D'Hooge
Uptime
Oracle Database Administrator
email: freek.dhooge@xxxxxxxxx
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-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Bertrand Guillaumin
Sent: donderdag 18 februari 2010 15:20
To: robertgfreeman@xxxxxxxxx; TESTAJ3@xxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: RE : ok for the last 18 yrs in using oracle I must have been asleep,
"implied database link"
Hi,
Are you sure it exists ? I've made tests and it does not work at least in
10.2.0.3.
sqlplus system/pass@db1
SQL*Plus: Release 10.2.0.3.0 - Production on Thu Feb 18 15:16:38 2010
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> SELECT * FROM DBA_USERS@db2;
SELECT * FROM DBA_USERS@db2
*
ERROR at line 1:
ORA-02019: connection description for remote database not found
sqlplus system/pass@db2
SQL*Plus: Release 10.2.0.3.0 - Production on Thu Feb 18 15:16:38 2010
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
I've even verified in the documentation and I haven't found trace of it.
Best regards,
________________________________________
De : oracle-l-bounce@xxxxxxxxxxxxx [oracle-l-bounce@xxxxxxxxxxxxx] de la part
de Robert Freeman [robertgfreeman@xxxxxxxxx]
Date d'envoi : jeudi 18 février 2010 00:54
À : TESTAJ3@xxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Objet : Re: ok for the last 18 yrs in using oracle I must have been asleep,
"implied database link"
In my mind, if someone is doing such things in code, this is probably a bad
practice. Also I'm not sure it's a great idea from a security point-of-view to
allow such things. Anyone else have any thoughts here?
RF
Robert G. Freeman
Master Principle Consultant, Oracle Corporation
Oracle ACE
Author:
Oracle Database 11g RMAN Backup and Recovery (Oracle Press) - ON ITS WAY SOON!
OCP: Oracle Database 11g Administrator Certified Professional Study Guide
(Sybex)
Oracle Database 11g New Features (Oracle Press)
Oracle Database 10g New Features (Oracle Press)
Other various titles
Blog: http://robertgfreeman.blogspot.com
________________________________
From: "TESTAJ3@xxxxxxxxxxxxxx" <TESTAJ3@xxxxxxxxxxxxxx>
To: oracle-l@xxxxxxxxxxxxx
Sent: Wed, February 17, 2010 1:15:18 PM
Subject: ok for the last 18 yrs in using oracle I must have been asleep,
"implied database link"
Ok so a co-worker asks a question about an implied database link, i'm like
"huh".
so a database link is NOT created in the source database but the
userid/password are the same in both source and destination.
take for example
system on db1 and db2 has a password of x12345.
I do a select count(*) from dba_users@db2 while connected on db1 and it
connects and returns a result set w/o a db link being created.
I've been enlightened again of something new about oracle.
so the question posed is, for a named db link you do "close" it, how do you
close an implied link?
joe
_______________________________________
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Senior Engineering & Administration Lead
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