Can anyone suggest how to fix batch processor performance?

The DBA's examined the OPA batch process while it was running. Oracle was sitting idle most the time waiting on the batch processor (according to the DBA staff.) Locks were not an issue and the DB was not under any load.
The performance is absolutely dismal and we are going to open an OPA support ticket, but would like a quick answer if anyone on this forum has a quick answer.
(Also, if you try to kill the batch job with <ctrl-c> because it is taking too long, then it leaves the sessions and cursors open. Is there a way to gracefully shut down the batch processor?)
We have a single simple table where the first 5 columns are conditions and the last column is a conclusion.
I filled the table with 1,000,000 rows of conditional data. I ran with a configuration like below:
<configuration>
<options>
<rulebase>../output/MyRules.zip</rulebase>
<database>
<url>jdbc:oracle:thin:myusername/mypassword@mydatabase:1521:mySID</url>
<driver>oracle.jdbc.OracleDriver</driver>
<driversrc>\myjdbcdriverpath\ojdbc6.jar</driversrc>
</database>
<output type="db" />
<mappings>
<boolean-format true-value="TRUE" false-value="FALSE" />
<mapping entity="global" table="SSPNA_IN" primary-key="ID">
<attribute name="bHasNoCountableIncome" field="BHASNOCOUNTABLEINCOME" />
<attribute name="bIsResidentOfNY" field="BISRESIDENTOFNY" />
<attribute name="cSSIBenefitAmt" field="CSSIBENEFITAMT" />
<attribute name="tFedLivingArrangementCD" field="TFEDLIVINGARRANGEMENTCD" />
<attribute name="tManualHMOInd" field="TMANUALHMOIND" />
<attribute name="tPaymentStatusCD" field="TPAYMENTSTATUSCD" />
<attribute name="tPrincipleProviderCD" field="TPRINCIPLEPROVIDERCD" />
<attribute name="cSSPNAPayment" field="CSSPNAPAYMENT" output="true" />
</mapping>
</mappings>
</options>
</configuration>

This is definitely not something we've seen in the testing environment.
Can you please raise a SR via Oracle Support and provide the following information?
1. Product version. Version 10.4.1 added multi-processor support for Java database connection in case you were using 10.4.0
2. Oracle database version
3. Is the database installed on a physical server or a VM? What's the machine specification, i.e. CPU and memory size?
4. Is the SSPNA_IN table indexed?
5. What is the logging level? Does it help if you change the logging level to ERROR?
6. Please provide the rulebase project and DDL/DML to create tables and insert sample data.

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