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CDB to OA Conversion: Layout Issue

sebastion

Hi,

Cadence version: IC6.1.5

Lately, we have been converting our design database from IC5 to IC6, using cdb2oa script, that was shipped along with IC6.

We managed to convert the database without any error. The schematic in OA matched perfectly to its CDB counterpart, but not for the layouts. Most of the layouts were converted correctly. Only a few showed some weird characteristics. For example, the location of a small part of layers (M1, M2, VIA1 and VIA2) in OA version got shifted in the same vertical direction (upwards). Their shapes and sizes still remained the same but shifted. It did not happen on the entire layers, just a part of them.

The command we used to convert the databse is shown as below: 

 /cadence/lnx_ic615.500.15/tools/dfII/bin/cdb2oa -lib library_oa  -cdslibpath ../cadence_cdb -mapviaparams > cdb2oa.log 

 Did anyone run into this problem before? Please advise. Thanks.

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