Thanks to Frank Davis, I was able to solve the following error; ‘Error while executing : INFORMATICA TASK:SILOS:@DAC_SIL_PositionDimension_FULL_TD_CMD’
A patch (Patch 12968641: DAC 10.1.3.4.1 CUMULATIVE PATCH FOR BI APPS – SEP 2011) for this error can be downloaded here.