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I have a DB2 server installed on Windows 2008, and found that the local OS users are instantly authenticated, but the server take a long time to authenticate LDAP (AD) users, more than 3 minutes but it will success. If i provide the wrong password, the authentication fails immediately.

Does anyone know if there any settings that make can tune the authentication process?

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I fixed this issue by running this command: db2set -g DB2_GRP_LOOKUP=local

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Glad you fixed it. Please mark this "accepted" when you are able. – jscott Jul 14 '12 at 0:16

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