Handling Errors in Perspective

[PGriffith]

Jython's bare except won't catch Java exceptions, for complicated reasons. You must add an additional catch clause:

system.db.runUpdateQuery Exception Handling

Normal jython try: -- except: won't trap java exceptions. You often need two except: clauses, the first being except java.lang.Throwable, t: or similar. Some related discussions. Note that when catching such exceptions in Vision Client scope or Designer scope, the real SQL exception is not available--it won't serialize and the JDBC classes don't exist in those scopes anyways.