It is recommended that you run
SYSCS_UTIL.SYSCS_CHECK_TABLE on all the tables in a database
offline after you back it up. Do not discard the previous backup until you have
verified the consistency of the current one. Otherwise, check consistency only
if there are indications that such a check is needed, because a consistency
check can take a long time on a large database.
See the for details about this
system function.