If the patch fails for one of the prerequisite patches then how do address this issue ?.

If the patch fails for one of the prerequisite patches then how do address this issue ?.


The patch information is stored in 2 tables in the database and
    appltop/admin/twotask/restrt/.rf9 files in the file system.

table names :  FND_INSTALL_PROCESSES
              AD_DEFFERED_JOBS

    So we have to take backup of these two tables and  the .rf9 files.

    Apply the prerequisite patch with the appropriate option. This patch
    will drop the above mentioned tables.

    Restore the  above tables and .rf9 files.

    Start the next patch  and  say yes for the question
    : do you want to continue from the previous session.