Hola a todos,
Tengo un problema, ejecutando un job cada cierto tiempo me da el siguiente error

Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : Unexpected batch update error committing the database connection.
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : org.pentaho.di.core.exception.KettleDatabaseBatchException:
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : Error updating batch
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : Batch entry 0 INSERT INTO viper_bi_dm.ar_hist (ent_pid, account_pid, cust_pid, ant_pid, due_pid, amount_left, date_pid, doc_pid, currency_pid, doc_age) VALUES ( 4678, 1231, 183, 1, 1, 0.9000000000, 20081226, 282458, 18, 0) was aborted. Call getNextException to see the cause.
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) :
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.pentaho.di.core.database.Database.emptyAndCommit(Database.java:1403)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.pentaho.di.trans.steps.tableoutput.TableOutput.dispose(TableOutput.java:611)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.pentaho.di.trans.step.BaseStep.runStepThread(BaseStep.java:2918)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.pentaho.di.trans.steps.tableoutput.TableOutput.run(TableOutput.java:680)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : Caused by: java.sql.BatchUpdateException: Batch entry 0 INSERT INTO viper_bi_dm.ar_hist (ent_pid, account_pid, cust_pid, ant_pid, due_pid, amount_left, date_pid, doc_pid, currency_pid, doc_age) VALUES ( 4678, 1231, 183, 1, 1, 0.9000000000, 20081226, 282458, 18, 0) was aborted. Call getNextException to see the cause.
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.postgresql.jdbc2.AbstractJdbc2Statement$BatchResultHandler.handleError(AbstractJdbc2Statement.java:2537)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.postgresql.core.v3.QueryExecutorImpl$1.handleError(QueryExecutorImpl.java:403)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1328)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:351)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2674)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : at org.pentaho.di.core.database.Database.emptyAndCommit(Database.java:1387)
2011/04/07 16:29:29 - Salida Tabla Ar_Hist.0 - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : ... 3 more
2011/04/07 16:29:29 - Update New Document - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : Errores detectados!
2011/04/07 16:29:29 - Update New Document - ERROR (version 3.2.0-GA, build 10572 from 2009-05-12 08.45.26 by buildguy) : Errores detectados!

El job ejecuta una transformacion varias veces y cada cierto tiempo me da ese error, no se cual es motivo, quisas sea la memoria, el volumen de los datos que se manejan.

Por favor si alguien me puede ayudar,

Lo mejor para todos,

yosuan