“ORA-14006: invalid partition name” in TOAD

Problem:

After issueing below SQL from the TOAD editor:

alter table myschema.mytable truncate partition p20101002;

It gives below error:
ORA-14006: invalid partition name

Cause:

TOAD’s engine sometimes cannot correctly evaulate “;” character at the end.

Solution:
Remove “;” character, or execute it from sqlplus which I did for weeks before finding exact cause:)