How to interrupt or cancel an SQL process in Personal Oracle 7.3.4?

I sent this message to comp.databases.oracle.misc about a week ago but it has produced no response there. I am therefore sending it to comp.databases.oracle.server in case that group is more appropriate.

According to the documentation in 'SQL*Plus Getting Started for Windows Platforms' it should be possible to interrupt an SQL operation (such as a long-running SELECT or UPDATE) by using CTRL+C or by using the "Cancel" option on the "File" menu.

Neither of these works for me: CTRL+C does nothing, and the drop- down menus don't drop down while an operation is in process. Is this normal or should I look for a problem with my installation? I am running Personal Oracle 7.3.4 on a stand-alone PC with no network connections, using Windows95. (I cannot use a later version because I have to stay compatible with a client's system.)

At present I am forced to cancel the task by using CTRL-ALT-DEL and/or to stop the Oracle database? Is there a risk of corruption in using either of these, or can I rely on Oracle rolling back the interrupted transaction in all cases? I have already found that Oracle doesn't rollback the incrementation of numbering sequences.

Leonard Will

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