If you upgrade an R5.0 or R5.0.1 server to R5.0.4 (or later R5 releases), the dircat task entirely rebuilds a directory catalog the first time the task runs. This avoids a potential view corruption problem that has occurred in a very small number of cases. Note that this rebuild does not occur if you upgrade from R5.0.2 or later servers, because the problem is corrected in R5.0.2.