Unable to insert properties into database using Datasink

Hi,

I am Unable to insert properties into database using Datasink. An "java.lang.Exception: SQL problem occured" exception is thrown when I try to do so.

Steps
1) Datasink step has the following properties

Property Name Value
duration = ${=testRunner.results[testRunner.results.size()-1].getTimeTaken()}
result_reason=${=testRunner.results[testRunner.results.size()-1].status}
target_name=${engineDataSource#endpoint}
test_case=engineSeverEST
test_result=0
test_run_id=1
test_step=${=testRunner.results[testRunner.results.size()-1].testStep.name}
test_suite=Engine EST

SQL Query:
insert into test_run_details(duration,result_reason,target_name,test_case,test_result,test_run_id,test_step,test_suite) values (?,?,?,?,?,?,?
,?);

When the test step is executed the "java.lang.Exception: SQL problem occured" exception was thrown.

Note:

I did try the sql query with quotes too
insert into test_run_details(duration,result_reason,target_name,test_case,test_result,test_run_id,test_step,test_suite) values ('?','?','?','?','?','?','?'
,'?');

Can you please help me determine the cause of failure?

Thanks