Hi Everybody, My Database server is running on Red Hat Linux enterprise advanced server 2.1, And my Oracle version is 9.2.0.1.0. My Client mechine also Red Hat Linux enterprise advanced server 2.1 , Oracle client version is 9.2.0.4.0. I am running a web application. Our application is in Magic edeveloper. I connect to Oracle using oracle gateway to my application. My Problem is my application is is becoming slow. I am not able to trace where the problem is. Before our application was running fine. recently i upgraded Oracle client version to 9.2.0.4.0. My Oracle client & server versions are different. I am getting error on my client mechine, it showing all memory address on the screen and the part of error is, arg register addr=83498cc .... Dump of memory from 0x83988c to 0x83499cc .... -- End of Call stack trace -- I am not able to trace where the problem is.Any insight please... Thanks, Ssreddy.