Caveats — Oracle SQL & PL/SQL Optimization for Developers 2.1.1 documentation
Sydney Oracle Lab: Pipelined functions implicitly create SQL level TYPES
Implementing Table Functions Without Declaring Types at Schema Level - Google グループ
Object of "TYPE" (SYS_PLSQL_ ). How t... | Oracle Community
IT 研究室 ( 前IT DBA's 資訊站): [FW] Script to get DDL of a schema user (TRIGGER, FUNCTION, PROCEDURE, TABLE DDL, INDEX_DDL)

oracle system generated SYS_PLSQL TYPE - Google 検索