DB adapter returning 0 rows = Error

Question

Im using the database adapter to recieve multiple rows. The BPEL process works ok when the supplied ID has records (ie when the procedure call returns rows in the table). When there are no records returned however, my db adapter call gives me an error:
<bindingFault xmlns="http://schemas.oracle.com/bpel/extension"><part name="code"><code>6502</code>
</part><part name="summary"><summary>file:/C:/soa_suite/bpel/domains/default/tmp/.bpel_GetAssessmentsForMultiPxReferral_1.0_ec761d48116898da9d36c7401e882f66.tmp/getAssessmentsForPxReferral.wsdl [ getAssessmentsForPxReferral_ptt::getAssessmentsForPxReferral(InputParameters,OutputParameters) ] - WSIF JCA Execute of operation 'getAssessmentsForPxReferral' failed due to: Error while trying to prepare and execute an API.
An error occurred while preparing and executing the NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR.NHSSOA_GET_ASSESS_TAB$GETPXAS API. Cause: java.sql.SQLException: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at line 1
[Caused by: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at line 1
; nested exception is:
ORABPEL-11811
Error while trying to prepare and execute an API.
An error occurred while preparing and executing the NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR.NHSSOA_GET_ASSESS_TAB$GETPXAS API. Cause: java.sql.SQLException: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at line 1
[Caused by: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at line 1
Check to ensure that the API is defined in the database and that the parameters match the signature of the API. Contact oracle support if error is not fixable.
</summary>
</part><part name="detail"><detail>
Internal Exception: java.sql.SQLException: ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at "NHSSOA.BPEL_GETASSESSMENTSFORPXREFERR", line 1
ORA-06512: at line 1
Error Code: 6502</detail>
</part></bindingFault>
I suspect that this could be handled either way (through PL/SQL, or BPEL - error handling perhaps?) my question is; what is the recomended way to approach a db adapter call not returning any records? Ive checked the XSD and the minoccurs for the record is set to 0.
The PL/SQL db adapter code is as follows:
FUNCTION getPxAssessTab (p_ref_id NUMBER) RETURN assessTabType
IS
CURSOR c_get_px_assess IS
SELECT *
FROM nhscont_assess
WHERE ref_id = p_ref_id;
r_c_get_px_assess c_get_px_assess%ROWTYPE;
v_new_tab assessTabType;
x PLS_INTEGER := 0;
BEGIN
OPEN c_get_px_assess;
LOOP
FETCH c_get_px_assess INTO r_c_get_px_assess;
EXIT WHEN c_get_px_assess%NOTFOUND;
x := x + 1;
v_new_tab(x) := r_c_get_px_assess;
END LOOP;
CLOSE c_get_px_assess;
RETURN v_new_tab;
END;

Answer 1

One possible cause for this may be due to a version incompatibility between JDeveloper and SOA. Make sure that both components are version 10.1.3.3 or above. From the stack trace, it looks like the use of JPublisher is involved. There were several fixes added for 10.1.3.3/10.1.3.4 to address problems like yours. We've seen this issue posted in the BPEL and SOA forums before.