There are some differences between SIS 32-bit and 64-bit, which result in some file formats not being supported as well as accessing certain datasets will require the correct supporting software.
The following file formats are not supported for SIS 64-bit.
Unlike SQL Server and PostGIS, to connect to Oracle you must have an Oracle client installed on the machine you are using. The version of Oracle (x86 or x64) must be the same as the version of SIS you want to use to connect to Oracle. Therefore if connecting to Oracle on a 64-bit version of SIS you will require the 64-bit Oracle Client installed on your machine.
Note: It is only the client version of Oracle that is important, both 32-bit and 64-bit versions of SIS can connect to either 32 or 64-bit Oracle server (providing the correct client is installed).
The following methods for adding an Oracle overlay will work with SIS 32-bit + Oracle client 32-bit and SIS 64-bit + Oracle client 64-bit:
Add Overlay > Spatial Database > Oracle Spatial
Add Overlay > Spatial Database > OS MasterMap Topography Layer
Add Overlay > OSGB Overlay > OS MasterMap Topography Layer
Using SIS 64-bit + Oracle client 64-bit the following methods for adding an Oracle overlay are not supported:
Add Overlay > Spatial Database > Cadcorp Editable Dataset
Add Overlay > Spatial Database > Cadcorp View Geometry
Add Overlay > Spatial Database > Cadcorp View Points
Add Overlay > Spatial Database > OGC SQL92 Dataset
Cadcorp recommends that users have the same version (32 or 64-bit) of Microsoft Office and SIS installed. For users on 64-bit machines that are running Microsoft Office 32-bit, either 32-bit SIS should be installed or users switch to 64-bit Office and install 64-bit SIS.
Although it is possible to have different architecture versions of Microsoft Office and SIS installed, every time a Microsoft Office program is opened it must go through a configuration process which takes roughly 1 minute to complete.
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