exec  fnd_conc_clone.setup_clean; 

run the following in SQL*Plus. Note that this will delete all data from system tables such as

FND_NODES, FND_OAM_CONTEXT_FILES, etc. The correct information for the current system will be

repopulated when AutoConfig is run. 
SQL> EXEC FND_CONC_CLONE.SETUP_CLEAN;
COMMIT;
EXIT;

本文转自ITPUB博客tolywang的博客，原文链接：EBS 清除node信息 fnd_conc_clone.setup_clean，如需转载请自行联系原博主。