The request for the explain plan with and without acum_mes has already been made. In addition, please reveal whether you have function based indexes on any of these columns. See if you have null strings in any of these columns you are treating as numbers. Finally, you might want to run a simple to_number individually on each character column you?re treating as a number to see if that helps you identify the bad value(s). -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of crcbedoy@xxxxxxxxxxxxxxxxx Sent: Wednesday, November 08, 2006 10:41 AM To: Johan Eriksson Cc: norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx; oracle-l-bounce@xxxxxxxxxxxxx Subject: Re: Query in 10g The same error message:(:(.. It´s gonna make me crazy!:(:( Isabel Bedoya Gómez Gestión de Tecnología Tel. 2307500 ext: 4077 Inactive hide details for "Johan Eriksson" <valpis@xxxxxxxxx>"Johan Eriksson" <valpis@xxxxxxxxx> "Johan Eriksson" <valpis@xxxxxxxxx> 08/11/2006 10:25 Para crcbedoy@xxxxxxxxxxxxxxxxx cc norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx, oracle-l@xxxxxxxxxxxxx, oracle-l-bounce@xxxxxxxxxxxxx Asunto Re: Query in 10g and what if you omit the concatination part? select ACUM_PERIODO,con_nombre, pec_saldo_valor, acum_valor_local from VRH_PRO_ACU_COL_PAG WHERE emp_codigo = '43103973' and ACUM_ANO = 2006 and acum_mes=9 / still gives you error? from the reference: ----------------- Error: ORA 1722 Text: invalid number ---------------------------------------------------------------------------- --- Cause: The attempted conversion of a character string to a number failed because the character string was not a valid numeric literal. Only numeric fields or character fields containing numeric data may be used in arithmetic functions or expressions. Only numeric fields may be added to or subtracted from dates. Action: Check the character strings in the function or expression. Check that they contain only numbers, a sign, a decimal point, and the character "E" or "e" and retry the operation. ----- Nothing that could apply? On 11/8/06, crcbedoy@xxxxxxxxxxxxxxxxx <mailto:crcbedoy@xxxxxxxxxxxxxxxxx> < crcbedoy@xxxxxxxxxxxxxxxxx <mailto:crcbedoy@xxxxxxxxxxxxxxxxx> > wrote: Con_nombre is a name, nombre means name in spanish:)