Set the correct character set from the DBMS properties page. The correct character sets are pre-configured, by default.
Sometimes (such as if the DBMS is configured with one character set but another character set is being used), manual configuration of the character set is required.
On the DBMSs page, click the DBMS tab.
Select the required DBMSs from the DBMS list.
From the Actions drop-down list, select Add actions.
In the DBMS Actions, select the Charset and change the required character set from the drop-down list.
Click Apply.