Should be set any parameter

HI all;
Oracle Express Edition is being engg college data maintenace whenever student login one by one is running succsefull and if all student login at time then it is hang.
what is solution for this problem
should be set any parameter

Find out what operations the login code does. Look at the source code. Get a trace.
That this is an issue with concurrent updates to the same row is only conjecture on my part. Without knowing what the application actually does.
Hemant K Chitale

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