Primary key enable error

Question

hi,
SQL> alter table SERVRECD4 enable constraint SERVRECD4_I0;
alter table SERVRECD4 enable constraint SERVRECD4_I0
ERROR at line 1:
ORA-02437: cannot validate (MUSADMIN.SERVRECD4_I0) - primary key violated
SQL> select constraint_name from user_constraints where status<>'ENABLED';
CONSTRAINT_NAME
SERVRECD4_I0
I tried to check duplicates in this composite PK using following query:
select FK_SERVRECD1NORAPA, FK_SERVRECD1FK_JO0, FK_SERVRECD1FK_JOB, FK_SERVRECD1ID from SERVRECD4 where row id NOT IN (select MIN(rowid) from SERVRECD4 group by FK_SERVRECD1NORAPA, FK_SERVRECD1FK_JO0, FK_SERVRECD1FK_JOB, FK_SERVRECD1ID);
Result : No rows returned.
Then i checked it and records aer same for below query as in table so it means NO duplicates then i don't seem to figure out why when trying to ENABLE constraint raises Above error.
SQL> select count(min(rowid)) from SERVRECD4 group by FK_SERVRECD1NORAPA, FK_SERVRECD1FK_JO0, FK_SERVRECD1FK_JOB, FK_SERVRECD1ID;
COUNT(MIN(ROWID))
2729402
SQL> select count(*) from SERVRECD4;
COUNT(*)
2729402
Constraints Info:
Name : SERVRECD4_I0
Type : PRIMARY
Table
Columns : FK_SERVRECD1NORAPA,FK_SERVRECD1FK_JO0, FK_SERVRECD1FK_JOB, FK_SERVRECD1ID
Disabled : YES
Deferrable : NO
Initially : NO
Deferred : NO
Validate : NO
Its 10gR2 database on linux.
thx

Answer 1

A little modification in my early query ->
select FK_SERVRECD1NORAPA,
       FK_SERVRECD1FK_JO0,
       FK_SERVRECD1FK_JOB,
       FK_SERVRECD1ID ,
       count(*)
from SERVRECD4
group by FK_SERVRECD1NORAPA,
       FK_SERVRECD1FK_JO0,
       FK_SERVRECD1FK_JOB,
       FK_SERVRECD1ID
having count(trim(FK_SERVRECD1NORAPA)||
             trim(FK_SERVRECD1FK_JO0)||
             trim(FK_SERVRECD1FK_JOB)||
             trim(K_SERVRECD1ID)) > 1;N.B.: Not Tested.....
Regards.
Satyaki De.