TCP/IP Timeout setting when using CLS

G'day community,
I'm in a project where we need to change the link-loss detection for DMQ connection using TCPIP, independent of the systemwide TCPIP/IP settings (we're talking DMQ v5.0-RP47 in OpenVMS 8.4).
There's no problem when using DMQ - DMQ connections: the logicals DMQLD_PING_TIMEOUT and DMQLD_PING_INTERVAL work fine here.
However, when connecting with non-OpenVMS systems via CLS, this does not work. It looks like the TCP driver is perfectly happy pinging CLS and CLS doesn't notice the communication partner went away (until the system-wide timeout is reached; but that has an higher value for other purposes!).
Is there a way to detect a connection was lost before TCP at systemlevel detects this?
Thanks in advance!
Oscar

hi mike...thanks again...
I created two parallel loops as you said...it works fine but one problem is there....as I said two parallel while loops are there with separate stop button...so when I start vi both are starting.... when I stop the my other code while loop it stops but my tcp vi does not stop even I stop the button because it is in the forever state...so it does not reach that button until the client initiate for once atleast....I just want to exit this forever state from server side.whenever server wants...
how to terminate that forever state from tcp listen vi?
Attachments:
tcp.png ‏158 KB

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import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import oracle.adf.share.logging.ADFLogger;
import oracle.jbo.JboException;
import oracle.jbo.server.ViewObjectImpl;
import oracle.jbo.server.ViewRowImpl;
import oracle.jbo.server.ViewRowSetImpl;
// ---    File generated by Oracle ADF Business Components Design Time.
// ---    Wed Sep 18 15:59:44 CDT 2013
// ---    Custom code may be added to this class.
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I use EE8ISO8859P2 character set on my server,
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AMERICAN_AMERICA.WE8ISO8859P15
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SQL*Plus: Release 10.2.0.1.0 - Production on Tue Jul 25 14:47:01 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
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C
¦
TEST@db102 SQL> exit
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With the Partitioning, OLAP and Data Mining options
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SQL*Plus: Release 10.2.0.1.0 - Production on Tue Jul 25 14:47:55 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
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C
DUMP(COL1)
©
Typ=1 Len=1: 166
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With the Partitioning, OLAP and Data Mining options
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AMERICAN_AMERICA.EE8ISO8859P2
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Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
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SQL*Plus: Release 10.2.0.1.0 - Production on Tue Jul 25 14:48:56 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
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Import: Release 10.2.0.1.0 - Production on Tue Jul 25 14:49:15 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
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. importing TEST's objects into TEST
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SQL*Plus: Release 10.2.0.1.0 - Production on Tue Jul 25 14:49:34 2006
Copyright (c) 1982, 2005, Oracle. All rights reserved.
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Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
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C
DUMP(COL1)
¦
Typ=1 Len=1: 166
TEST@db102 SQL>

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errors.docx ‏3016 KB
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Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
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*   PARTNERADDRESSES              =
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When I make export with exp utility with NLS_LANG environment
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Hi
I have an issue in using OracleParameter in my .net windows app(vb.net) . If I create a OracleParameter like this, ths size property is not set
Dim opParam As New OracleParameter("v_Test", OracleDbType.Char, 120, ParameterDirection.Output)
'Here 120 is the size I have set, but it is not getting assigned to the Size property
MsgBox(opParam.Size) 'This will return 0
'I have to assign like this explicitly to have the size property set.
opParam .Size=120
Is it a problem in ODP.Net or I am doing something stupid ?.
Any answers would be greatly appreciated
Cheers
John

Hi John,
In looking at the constructor call you have this "format":
string, OracleDbType, int, ParameterDirection
This does not match to a constructor that does what you want. What it matches to is:
string, OracleDbType, object, ParameterDirection (i.e. the value (object) is being set where it looks like you want to set the size).
The closest matching constructor for what you want would be:
string, OracleDbType, int, object, ParameterDirection
i.e.
Dim opParam As New OracleParameter("v_Test", OracleDbType.Char, 120, null, ParameterDirection.Output)Hope that helps a bit (assuming I have not misread, etc...)
- Mark

Trouble with DAQmxReadDigital Timeout (200284) when used in a threaded loop

Hi,
I'm using a NI6537 for fast Digital Acquisition. The board is installed on a NIPXIe-1062 crate controlled by a NI PXIe-8130 controller, where the software is running. I'm reading all the 32 lines as a single channel, at 50MS/s, and the clock is the one provided by the board itself. I put the timeout as infinite, but I also tried various other settings. As I'm reading a finite samples bunch of 524288 samples, at 50 MS/s, a timeout of 1 second should be by far sufficient.
As far as I put the DAQmxReadDigitalU32(...) call in a simple loop I have no troubles, everything working fine.
for (...) {
   DAQmxReadDigitalU32(...);
} // That loop works perfectly
while, if a have a loop inside a multi-thread process, or simply I give the system some freedom inside the loop, sometimes I get the timeout error. Note that the time cost of the Sleep() function is just of some millisecond, so there is no reason for the call to timeout.
for (...) {
   DAQmxReadDigitalU32(...);
   Sleep(1); // To release system resources...
}// That loop stops erratically
With the last code, I can also see that actually the board did not complete the reading, i.e. is returning less samples than what requested. It seems to me that someting is stopping the acquisition, but I'm not able to figure what. The same happens even in LabView, using the VI read: sometimes the read randomly generates a timeout error and stops, even if LabView is the only running application.
Could you point me what I'm doing wrong?
Thanks, Piero.
DAQmxReadDigitalU32

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