[Bug # 239627] When operating within big-endian architectures such as Digital UNIX, Linux, and NT, if the ID of the last column in the colidarray of a row in the sysstatistics table is a multiple of 256, then alter table drop column corrupts data in the colidarray column. This happens only if the columns dropped by the alter table drop column command do not appear in the colidarray, and if the ID of the last column minus the number of columns dropped is no longer a multiple of 256.
Workaround: If the above requirements are met and the colidarray column for the sysstatistics table is corrupt; delete sysstatistics, and then regenerate it. The correct values for the colidarray column will then be represented.