This problem, which in essence is bad behaviour from Informatica bringing down Oracle, is a good illustration of unintended consequences of an apparently innocuous security setting. Per our company’s security standards, database passwords expire every 90 days. When this happens users are prompted to change their password before they can continue logging into Oracle. This applies to application user IDs too. It appears that Informatica 8.6.1 HF6 (part of OBIA 7.