ORA-02298: cannot validate .......

Question

Hi,
I exported user cmsadmin with constraints=y and consistent=y as DBA user from 9i then Imported it using fromuser/touser =cmsadmin into oracle 10g..
i got the follwing error while importing:
IMP-00017: following statement failed with ORACLE error 2298:
"ALTER TABLE "RESPONSES" ENABLE CONSTRAINT "FK_RESPONSE_FK_CTF_RE_CERTIFIC""
IMP-00003: ORACLE error 2298 encountered
ORA-02298: cannot validate (CMSADMIN.FK_RESPONSE_FK_CTF_RE_CERTIFIC) - parent keys not found
The
ALTER TABLE "CMSADMIN"."RESPONSES" ADD CONSTRAINT
"FK_RESPONSE_FK_CTF_RE_CERTIFIC" FOREIGN KEY ("REP_CERTIFICATION_ID")
REFERENCES "CERTIFICATION" ("CTF_CERTIFICATION_ID") ENABLE NOVALIDATE ;
But when i checked number of rows of for CERTICATION table in 9i DB and target 10g DB they are same....
But when i run the following query:
select distinct REP_CERTIFICATION_ID from RESPONSES a where not exists (select CTF_CERTIFICATION_ID from CERTIFICATION where CTF_CERTIFICATION_ID = a.REP_CERTIFICATION_ID);The above query returns 288 rows meaning they are not in CERTIFICATION table.. but the count of number of rows are same in source and target DB..
What can be the reason..
can you pls help...
Thx

Answer 1

Hi,
here is my EXP and IMP commands:
exp cmsadmin/frora04_adm file=cmsdbt01_cmsadmin_29Mar07.dmp log=cmsdbt01_cmsadmin_29Mar07.log owner=cmsadmin consistent=y grants=y constraints=y rows=n
imp cmsadmin/orad1_adm file=cmsdbt01_cmsadmin_29Mar07.dmp log=cmsadmin_imp.log fromuser=cmsadmin touser=cmsadmin ignore=y
moreover, when i run the following query in source database on 9i from where i took the export it does not return any rows meaning that data is fine in both parent and child tables:
select distinct REP_CERTIFICATION_ID from RESPONSES a where not exists (select CTF_CERTIFICATION_ID from CERTIFICATION where CTF_CERTIFICATION_ID = a.REP_CERTIFICATION_ID);
But, when i run the same above query in target table after importing the schema (usng above imp command) i get 14 distinct CTF_CERTIFICATION_ID meaning that they are not in parent table..
Master Table --> CERTIFICATION
PK column --> CTF_CERTIFICATION_ID
Child Table --> RESPONSES
FK column to above PK --> REP_CERTIFICATION_ID
Hence issue still persists reg. parent key not found after importing..
Thx