Hi, Maybe, there is no work-around.
For supporting it, there are two steps. step1. fix for PREPARE. step2. fix for EXECUTE. About step1, there are two way. I want to choose Idea-2. Idea-1. ecpglib prepares Oids of type listed in PREPARE statement for 5th argument of PQprepare(). But it's difficult because ecpg has to know Oids of type. # Just an idea, create an Oid list in parsing. Idea-2. Use ECPGdo with whole PREPARE statement. In this way, there is no problem about Oid type because backend resolves it. I think the current implementation may aim to it. If we choose Idea-2, we should make a valid SQL-command(remove double quotation) and avoid any processing about prep_type_clause and PreparableStmt except for parsing. One of such processing is the checking a number of parameters that occured the error. It may take time, but it's easier than Idea-1. Is the direction of fixing good? About step2, there is the work-arround pointed by Meskes-san. Regards Ryo Matsumura
