ora-01722 invalid number

There are a variety of scenarios in which ORA-01722 can occur. Given that the two locales (UK and US) are identical with respect to the characters that make up a valid number (digits, decimal point, sign, 'E'/'e' for scientific notation) it is unlikely that this is the cause of your problem.

More likely, there really is 'bad data' somewhere that results in the conversion raising the error. The Oracle FAQ reviews a number of the possible scenarios and suggests a resolution strategy for each. Review this if you haven't already done so.
    http://www.orafaq.com/error/ora-01722.htm

Best regards,
Jim Cakalic

>> if u r trying to update an oracle table, thru JDBC...    
>>> if u r trying to update a numerical value in the table using preparedstatement, make sure you are a compatible corresponding java object to update.
   column type java.sql.Types.NUMERIC -- use java.lang.BigDecimal
   column type java.sql.Types.INTEGER -- use java.lang.Integer
   column type java.sql.Types.BIGINT -- use java.lang.Long
   column type java.sql.Types.TINYINT -- use java.lang.Byte
   for SMALLINT -- java.lang.Short
   for REAL -- java.lang.Float
   for FLOAT -- java.lang.Float
   for DOUBLE -- java.lang.Double
     

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