ORA-01017 Invalid Username Password when connecting to 11g database from 9i client

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Have been trying to connect to a schema in 11g (v11.2.0.1.0) from a PC with a 9i (v9.2.0.1) client. It seems to connect fine to some schemas, but not this one - it comes back with a ORA-01017 Invalid Username/Password error every time. The username and password are DEFINITELY correct - can anyone think of a reason why this wouldn't work? Are there any fundamental incompatibilities between 9i and 11g?
Feb 22, 2022 in Others by Rahul
• 9,670 points
604 views

1 answer to this question.

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The user and password are DEFINITELY incorrect and additionally, the Oracle 11g credentials are case sensitive. Try to ALTER SYSTEM SET SEC_CASE_SENSITIVE_LOGON = FALSE; and alter password by clicking on the link below:-

http://oracle-base.com/articles/11g/case-sensitive-passwords-11gr1.php

answered Feb 22, 2022 by Aditya
• 7,660 points

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