Home
All Oracle Error Codes
Oracle DBA Forum

Frequent Oracle Errors

TNS:could not resolve the connect identifier specified
Backtrace message unwound by exceptions
invalid identifier
PL/SQL compilation error
internal error
missing expression
table or view does not exist
end-of-file on communication channel
TNS:listener unknown in connect descriptor
insufficient privileges
PL/SQL: numeric or value error string
TNS:protocol adapter error
ORACLE not available
target host or object does not exist
invalid number
unable to allocate string bytes of shared memory
resource busy and acquire with NOWAIT specified
error occurred at recursive SQL level string
ORACLE initialization or shutdown in progress
archiver error. Connect internal only, until freed
snapshot too old
unable to extend temp segment by string in tablespace
Credential retrieval failed
missing or invalid option
invalid username/password; logon denied
unable to create INITIAL extent for segment
out of process memory when trying to allocate string bytes
shared memory realm does not exist
cannot insert NULL
TNS:unable to connect to destination
remote database not found ora-02019
exception encountered: core dump
inconsistent datatypes
no data found
TNS:operation timed out
PL/SQL: could not find program
existing state of packages has been discarded
maximum number of processes exceeded
error signaled in parallel query server
ORACLE instance terminated. Disconnection forced
TNS:packet writer failure
see ORA-12699
missing right parenthesis
name is already used by an existing object
cannot identify/lock data file
invalid file operation
quoted string not properly terminated

Re: Remote Select opening transaction

Marc Demlenne

2007-04-03

Replies:
Hi,

It is ! You can try the following :
- Do a select * from remoteDB.remoteTable@remoteHost (but remoteDB is enought, can be same host)
- Don't commit, rollback or quit. Be carefull not to exit in timeout
- And monitor the RBS. you'll notice that your sqlplus process is locking one of the RBS, and the number of extent will start growing up and up until you'll recah the ORA-01562 error.
I use :
select rn.name, r.curext, t.start_uext, r.extents, t.xidusn, s.sid, s.process, t.start_time
from V$rollstat r,  v$rollname rn, V$transaction t, v$session S
WHERE t.addr = s.taddr (+) and t.XIDUSN=r.USN AND r.usn(+) = rn.usn

Exiting your sqlplus (or commit or rollback) will unblock the situation, freeing your RBS. In my case, we use the "OPTIMAL" parameter and see the number of extents immediately reducing to it's optimal value ...

Best Regards,

On 4/3/07, Kerber, Andrew W. <Andrew.Kerber@umb.com> wrote:

Hi.  I am pretty sure your information is incorrect.  I have never seen a select across a db link open a transaction.

 

-----Original Message-----
From: oracle-l-bounce@freelists.org [mailto: oracle-l-bounce@freelists.org] On Behalf Of Marc Demlenne
Sent: Tuesday, April 03, 2007 7:08 AM
To: oracle-l@freelists.org
Subject: Remote Select opening transaction

 

Hello,

In Oracle 8, when performing a select query on another database threw DB link, Oracle opens a transaction that could only be closed by commit or rollback. That could be harmful when developers are not aware of this and don't close transaction. (leading to ORA-01562.)

What is the reason of this behaviour ? Is there some docs / faq explaining this ?
Is this feature also common to later versions of Oracle ?

Thanks a lot for any piece of information given,

--
Marc 

------------------------------------------------------------------------------
NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. Thank you.

==============================================================================




--
Marc Demlenne