All Oracle Error CodesOracle DBA Forum

IMG-00512:

multiple incompatible scaling parameters found
Cause: Multiple incompatible scaling parameters were found in the image process command string. With the exception of XSCALE and YSCALE, which can be used together in a process command string, scaling functions are mutually exclusive and cannot be combined.
Action: Remove scaling functions until only one remains (or two, if they are XSCALE and YSCALE).