Question

I have a stored procedure in Oracle 9i which inserts records in a table. The table has a primary key built to ensure duplicte rows doesnot exists.

I am trying to insert a record by calling this stored procedure and it works first time properly. I am again trying to insert a duplicate record and expecting unique constraint violation error. But I am getting
ORA-01401 inserted value too large for column

I knew its meaning but my query is , if the value inserted is really large then how it got successful in the first attempt.

Table is

CREATE TABLE KEY
(
  ID  VARCHAR2(25 BYTE),
  KEY         NUMBER(4)                      NOT NULL,
  INSERT_DATE    DATE,
  WORK_KEY    VARCHAR2(128 BYTE)
)

CREATE UNIQUE INDEX SACHINIDX ON KEY
(ID, KEY)

Call is
EXEC SQL EXECUTE
BEGIN
keyadd(:id, :key, :wkey);
END;
END-EXEC;

Stored Procedure is

PROCEDURE keyadd(id IN VARCHAR2, key IN NUMBER, wkey IN VARCHAR2)
{
        BEGIN
        INSERT INTO KEY
            (   ID,
                KEY,
                INSERT_DATE,
                WORK_KEY)
            VALUES
            (
                id,
                key,
                SYSDATE,
                wkey
            );
        EXCEPTION
            ROLLBACK;
        COMMIT;
            RETURN;
        END;
}

First insert sqlca.sqlcode is [0]
Second insert sqlca.sqlcode is [-1401]

Answer 1

CREATE TABLE KEY
(
  ID  VARCHAR2(25 BYTE),
  KEY         NUMBER(4)                      NOT NULL,
  INSERT_DATE    DATE,
  WORK_KEY    VARCHAR2(128 BYTE)
);

CREATE UNIQUE INDEX SACHINIDX ON KEY
(ID, KEY);


create or replace PROCEDURE keyadd(id IN VARCHAR2, key IN NUMBER, wkey IN VARCHAR2)
is
        BEGIN
        INSERT INTO KEY
            (   ID,
                KEY,
                INSERT_DATE,
                WORK_KEY)
            VALUES
            (
                id,
                key,
                SYSDATE,
                wkey
            );

        COMMIT;

--      EXCEPTION when others then
--          ROLLBACK;
end keyadd;
/

begin
  keyadd('one', 1, '59FC9AD0FA5A8932836824B0489B73252C120301A2205154C096B4EB213FA983D5E500B62A469439');
  keyadd('one', 1, '905BD61AAEC986ACF887DBA7C04D650B61A8818ABEBE1720D810B4A426EB9220558B530D5119315F');
end;
/

gives me the expected ORA-00001: Unique Constraint... error, not an ORA-01401. So, without further information its impossible to help.