ADZDALLDDLS - Show stored DDL statement text. This script generates report of DDLs from AD_ZD_DDL_HANDLER table
ADZDSHOWLOG - Show full diagnostic log for online patching infrastructure. This script is used to show all log messages.
These scripts are under -> $AD_TOP/sql, you can see their definitions and their sqls that they use for producing those outputs.
So, the first one reports the executed DDLs by phase.
the scond one reports, the log messages that are recorded by adop.