Synchronous and Asynchronous connections

security Supervisor (4.x - 6.x)
1

Hi,

Can someone tell me in what way a synchronous connection differs from a asynchronous connection. Documentation of B.O. does not tell much (as usual).

Reason behind this question is that we get an error when we declare a connection as asynchronous. Here is what happens: 1.We want to design a new universe through the design wizard and use
an asynchronous connection x.
2.Connection x is tested by pushing the test-button and we get “the
server is responding” as feedback.
3.Next we push the next-button and get the following error
“Error in retrieving owners (details:unknown error during fetch)” followed by
“Error in retrieving tables (details:ORA-03127: no new operations
allowed until the active operation ends)”. The Oracle message has something to do with a Two-Task interface. 4.Next wizard-screen(Create initial classes and objects) remains
blank.

When connection x is changed to synchronous mode there is no problem.

For your information: we use B.O. 4.1.1, Oracle 7.3.3 and SQL*Net 2.3

Thanks in advance,

Raymond van Beekum
ING Bank, The Netherlands

Listserv Archives (BOB member since 2002-06-25)

2

Raymond van Beekum schrieb:

Hi,

Can someone tell me in what way a synchronous connection differs from a asynchronous connection. Documentation of B.O. does not tell much (as usual).

There are a few differences. One of them is, that if you do something with a connection (like TEST) you can continue to work within a BusObj module (e.g. “continue”, but the previous operation is not yet complete, because of “asynchronous” operation of the link stuff to “other” stuff within a module). You should get no error with the async operation, if you wait for some time (until the connection related operation is fiished…)

Walter.

Walter Muellner
Delphi Software GmbH, Vivenotgasse 48, A-1120 Vienna, Austria Tel. +43-1-8151456-12, Fax: +43-1-8151456-21 e-mail: w.muellner@delphi.at, WEB: http://www.delphi.at

Listserv Archives (BOB member since 2002-06-25)