Minitab is a robust DDE server, suitable for use across a wide range of
applications. However, several factors outside Minitab might limit DDE
performance, including the following:
The general performance of DDE
The memory limitations and
general performance of your computer
The number and size of other
applications that are running
The performance of DDE in
Minitab queues transfers that it cannot process immediately. Minitab then
processes queued transfers in priority order. If you need to improve DDE
performance, try the following:
Prioritize your most important
DDE updates. To change priorities for links, choose
Edit > Worksheet Links > Manage
select the link to change, then click
enter a new priority.
Use a more powerful computer
to run the applications.
A link for this server-topic-item already exists
Each link name (the combination of application, topic, and item names) must
be unique. For example, you cannot have two links that each have the name excel mydata.xls R1C1:R20C2.
Change the new link to make it unique, or remove the original link.
Circular links occur when Minitab receives and sends DDE data at the same
time, and when the data being received directly or indirectly refers to the
data being sent. Circular links can loop indefinitely and occupy system
resources. However, sometimes a link that triggers a circular link error
message is not truly circular.
If you know the link is
circular, stop the update by pressing
After several identical
updates, Minitab may identify the link as circular. If Minitab detects a
circular link, it prompts you to ignore external requests and updates.
Yes to stop the current DDE transaction and
change your Minitab preferences to ignore DDE updates and requests. All DDE
transactions are disabled until you change your DDE preferences to enable
updates and requests. For more information, go to
Stop or start DDE transactions and remove DDE links
and see the section "Globally stop and start DDE transactions".