Portal server-error page validation

When I start webMethods Portal Server Configuration, I setup appropriate value in fileds on MSSQL tab (I defined wm_portal as Portal database , wmpor as Portal database user , of course this database exists in MSSQL Server databases), and I select second option :‘Create a new Schema for an existing Portal database’, and when I go to the next step I get an error:

Error page validation

Portal user login failed or Portal database is not valid.
Type: java.io.IOException
Message:[wm-cjdbc34-0052][SQLServer JDBC DRiver][SQL Server]Invalid object name ‘TBLTHING’.

Please, help.

webMethods Portal server does not support case-sensitive collations in Microsoft SQL Server.

Check if you have installed SQL Server with case-sensitive collation enabled.