this problem is related to the following location: at public java.sql.Clob() throws java.sql.SQLException at public java.sql.Clob com.data.subscriber.Sub
create table t (vc_val varchar2(100), clob_val clob);create type clob_t as table of clob;select cast(collect(vc_val) as varchar_t) from t;
接着就失败了select cast(collect(clob_val) as clob_t)