In Adaptive Server 15.0, system catalogs, except the message tables, fake tables (non-row-oriented tables), and logs – are row-locked. These tables no longer have a clustered index, but instead now have a “placement” index, with a new index ID. Pages at the data level for Adaptive Server version 15.0 are not chained together, and table starting locations are no longer set, but are now randomly generated.
