The cubrid plandump utility is used to display information on the query plans stored (cached) on the server.
cubrid plandump options database_name
options : [-d|--drop] [{-o|--output-file=} file]
Checking the query plans stored in the cache
cubrid plandump testdb
Dropping the query plans stored in the cache (-d or --drop)
cubrid plandump -d testdb
Saving the results of the query plans stored in the cache to a file (-o or --output)
cubrid plandump -o output.txt testdb