I know this is not a Toad forum....

..but I have a problem with accessing another database via Dblink, 11.2 to 9.2.
I have written routines to test iteratively against dual, 100000s of times and this consistently succeeds.
I have written routines to test iteratively against dual, 10s of times against the largest table I could find (multi-million rows)
This too never fails, both of the above on select count(1)
But, when I am pulling a large volume of data over the dblink, purely to insert into another table, sometimes (not consistently) it fails, and then it will not work on that Toad session again, even though using sql*plus to connect via the same client still works.
Okay questions; given that Toad works for everything else, but I get this error on two different client machines, albeit intermittently, can anyone suggest what might help. (could this be virtual memory related?)
Two, I presume if I use dbms_job to time the same query in then as I have bypassed my client then provided comms between my servers is good then this should not fail 'off client'?
Three, is there any kind of time out setting that could help?
thanks for any input,
Robert

But, when I am pulling a large volume of data over the dblink, purely to insert into another table, sometimes (not consistently) it fails, and then it will not work on that Toad session again, even though using sql*plus to connect via the same client still works.It fails with which error? From your description I would guess at some kind of network/connection lost issue (Ora-3113). In such cases you can't reuse the same session again since the connection to that session is lost.
I don't use toad much but I have the same experience with sessions in SQL developer. If the connection was lost I need to close this connection (the tool sometimes doesn't nitice the lost conenction properly). And reopen a new connection+session again. Then it works usually. In very rare cases I have to close the whole SQL Developer and restart it (or open a second developer instance). Maybe it is the same with toad.
Also there are timeout settings on various parts of the system. At the moment I can think of the following locations:
* Your local SQLNET.ORA
* the SQLNET.ORA on the local database with the DB-Link
* Database parameters like DISTRIBUTED_LOCK_TIMEOUT
select * from v$parameter where name like '%timeout%';Edited by: Sven W. on Nov 19, 2010 3:26 PM

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