it should not contain any null values too other than being unique. Kranti
-----Original Message----- Sent: Wednesday, April 24, 2002 5:39 PM To: Multiple recipients of list ORACLE-L Hallo, I am trying to run this script, ALTER TABLE PBK.K1 ADD CONSTRAINT idx_rollson PRIMARY KEY (BUTIKS_NR) but gets the erormessage ORA-02437: cannot validate (PBK.IDX_ROLLSON) - primary key violated what can I do to solve this? Please help me. Wouldnt it be enough to have unique values in thefield butiks_nr? Thanks in advance Roland -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: kranti pushkarna INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).