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Asked: 2026-05-25T14:19:57+00:00

Calling all Oracle heads, I’ve got a weird problem with a sql query… Running

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Calling all Oracle heads, I’ve got a weird problem with a sql query…

Running locally, an IIS server running a basic web service executing a query via a VPN connection to another Oracle database.

Many other queries work, some more that take longer to return data.

It’s an Oracle 9i database.

Initially I was using an Oracle 11g client, then switched back to 10g thinking it may be that.

I thought it may be a ADO.NET Oracle driver issue, so extracted the sql to a file a ran it directly from sqlplus (console). Same thing. 01331 after about 1 second.

I can run the same query on the target site using an old 4gl sql editor using 9i client and it works. I tested it on SQL Worksheet on the client at the target site it work.

The only thing unusual with this sql statement is that it performs a tree walk using the CONNECT BY function.

I don’t think it’s a time out issue as more complex (well certainly larger) queries eventually return data. I did something like select count(*) from largetable where longstring not like ‘%test%’ to provide enough time to try an recreate a timeout, but it didn’t. Additionally the 03113 error occurs quite quickly after executing the statement. Nothing I can see in the sqlnet.log.

I would really appreciate any pointers?

Thanks in advance,

Sam

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  1. Editorial Team

    I’ve found the problem to be including a column of type long in the select query.

    Can anybody think of a reason for this?

    Tried two Oracle clients (10/11) over two guest os’ (Vista/Windows 7) and same problem.
    Different local firewalls, no Oracle alert logs, no sqlnet logs. No idea.

    Any further suggestions? Or is it Oracle support time?

    I managed to solve this problem. I ended up porting the .net project to .net 4 and using the Oracle.DataAccess provider.

    The original query contained a nested treewalk using the connect by function, which worked on the server, but not from the client. I kept getting ORA03113.

    I had further problems using the 2.x version of the ODP.NET – ORA-12560: TNS:protocol adapter error. To solve this I installed the latest oracle client, 11.2 and the latest ODP.NET client, 11.2. Granted permissions to oracle home (and sub folders/item) – rebooted.

    Hope this helps someone.

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