I'm doing a simple application of userregister from which I found on net but displays the error message HTTP status 404 not found by GlassFish server 4.1 in NetBeans using Oracle 10g

404 means page not found so check your URLs are correct. You'll have a typo or misconfigured URL somewhere. Or the file doesn't actually exist of course...

but this time I'm getting a blank page and the data which I entered did not store in my Oracle database!

OK, time to post up some code I think. This is a java project?
No matter what the language a blank page is generally caused by a code error. Are you using try/catch blocks?

I think blank page is showing because you may not have added the jar file which is required. make sure you have added that jar file for your DB

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