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>19.4. Authentication Problems</A
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>    Authentication failures and related problems generally
    manifest themselves through error messages like the following:
   </P
><P
></P><PRE
CLASS="PROGRAMLISTING"
>FATAL:  no pg_hba.conf entry for host "123.123.123.123", user "andym", database "testdb"</PRE
><P>
    This is what you are most likely to get if you succeed in contacting
    the server, but it does not want to talk to you. As the message
    suggests, the server refused the connection request because it found
    no matching entry in its <TT
CLASS="FILENAME"
>pg_hba.conf</TT
>
    configuration file.
   </P
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></P><PRE
CLASS="PROGRAMLISTING"
>FATAL:  password authentication failed for user "andym"</PRE
><P>
    Messages like this indicate that you contacted the server, and it is
    willing to talk to you, but not until you pass the authorization
    method specified in the <TT
CLASS="FILENAME"
>pg_hba.conf</TT
> file. Check
    the password you are providing, or check your Kerberos or ident
    software if the complaint mentions one of those authentication
    types.
   </P
><P
></P><PRE
CLASS="PROGRAMLISTING"
>FATAL:  user "andym" does not exist</PRE
><P>
    The indicated database user name was not found.
   </P
><P
></P><PRE
CLASS="PROGRAMLISTING"
>FATAL:  database "testdb" does not exist</PRE
><P>
    The database you are trying to connect to does not exist. Note that
    if you do not specify a database name, it defaults to the database
    user name, which might or might not be the right thing.
   </P
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>Tip: </B
>    The server log might contain more information about an
    authentication failure than is reported to the client. If you are
    confused about the reason for a failure, check the server log.
   </P
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