I'm trying to reproject some data from one CRS to another (SRID:27493 to SRID:3763) using the SDO_CS.TRANSFORM function.
The function works and returns no errors, but the coordinate transformation function that Oracle is using must be inadequate, because the results area inaccurate.
So, I would like to alter or define a new coordinate transformation function that suits my data.
I've realized that in the SDO_COORD_REF_SYS table there is an PROJECTION_CONV_ID attribute that should lead somewhere, but the transformation function and its parameters seem to be dispersed through several tables.
Anyone has experience in this and / or can point some manuals / tutorials?