How to query a CLOB column in Oracle
问题 I\'m trying to run a query that has a few columns that are a CLOB datatype. If i run the query like normal, all of those fields just have (CLOB) as the value. I tried using DBMS_LOB.substr(column ) and i get the error ORA-06502: PL/SQL: numeric or value error: character string buffer too small How can i query the CLOB column? 回答1: When getting the substring of a CLOB column and using a query tool that has size/buffer restrictions sometimes you would need to set the BUFFER to a larger size.