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Asked: 2026-05-16T14:51:44+00:00

I have 2 tables T_Foo foo_id fooHeader T_FooBodys foo_id foobody foo_id are primary key

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I have 2 tables

T_Foo
foo_id
fooHeader

T_FooBodys
foo_id
foobody

foo_id are primary key for both of their respective tables. In second table, foo_id is foreign key to first table. I generate the PK for both table values using a sequence and try to make insert – once into FooHeader and twice into FooBody.

MY code crashes on the second insert into t_FooBodys in the loop from error “ORA-00001: unique constraint (USERID.FooBodys_PK) violated”

So I have 2 questions:

1) What is the fundamental difference between MSSQL Server and Oracle here? This worked fine in SQL Server! I had one-to-one/many relationships all the time in there

2) What is the simplest way to fix this besides adding another key and essentially ending the shared primary key concept?

Thanks much

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1 Answer

  1. Editorial Team

    foo_id are primary key for both of
    their respective tables

    You cannot have duplicate entries for a PK with either MS SQL Server or Oracle, so you have made a mistake somewhere. You may have set up the FK relationship in SQL Server, but there is no way that you set foo_id in T_FooBodys as a PK and it still allowed duplicate entries.

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