I'm developing a credit card applicatoin in which i've to make use of existing database however when I attempt copying small database It's copying easily however when I attempt copying my database that is of two.5mb it's not copying some occasions it shows o bytes of memory replicated I've adopted some tutorial for eg http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/ is one but I am unable to resolve it. Can any body produce suggestion or any helpful tutorial that will help me resolve it

This really is triggered by aapt blending the file inside your assets folder. See links below for a number of solutions:

How to read LARGE Sqlite file to be copied into Android emulator, or device from assets folder?

http://ponystyle.com/blog/2010/03/26/dealing-with-asset-compression-in-android-apps/