Fallback considerations

You must consider the following points before falling back:

• Applications that are compiled using the R3.5 compiler must be preprocessed, recompiled, and then linked with an earlier release of the compiler after the fallback. You must recompile the query plans.

  NOTE:

  Recompiling programs might result in different execution plans, causing a change in performance.

• You must run the mxtool fixrcb command after falling back from R3.5 to a lower version. See Accessing the database.

• The online dumps taken on 3.5 cannot be used by TMF recovery on an earlier release. Hewlett Packard Enterprise recommends that you take new full TMF online dumps immediately after fallback.

• Stop RTSSMON before falling back from L17.02 to an earlier RVU.