I am using postgresql 8.3 with openJPA 1.2.1. I hit the following error
org.postgresql.util. PSQLException: Bad value for type BigDecimal : Y at org.postgresql.jdbc2.AbstractJdbc2ResultSet.toBigDecimal(AbstractJdbc2ResultSet.java:2710) at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getBigDecimal(AbstractJdbc2ResultSet.java:2133) at org.postgresql.jdbc2.AbstractJdbc2ResultSet.getBigDecimal(AbstractJdbc2ResultSet.java:311) at org.tranql.connector.jdbc.ResultSetHandle.getBigDecimal(ResultSetHandle.java:179) at org.apache.openjpa.lib.jdbc.DelegatingResultSet.getBigDecimal(DelegatingResultSet.java:282) at org.apache.openjpa.jdbc.sql.DBDictionary.getBigDecimal(DBDictionary.java:389) at org.apache.openjpa.jdbc.sql.PostgresDictionary.getInt(PostgresDictionary.java:210) at org.apache.openjpa.jdbc.sql.DBDictionary.getChar(DBDictionary.java:556) at org.apache.openjpa.jdbc.sql.ResultSetResult.getCharInternal(ResultSetResult.java:288) at org.apache.openjpa.jdbc.sql.ResultSetResult.getObjectInternal(ResultSetResult.java:356) at org.apache.openjpa.jdbc.sql.AbstractResult.getObject(AbstractResult.java:662) at org.apache.openjpa.jdbc.meta.strats.HandlerStrategies.loadDataStore(HandlerStrategies.java:205) at org.apache.openjpa.jdbc.meta.strats.HandlerFieldStrategy.load(HandlerFieldStrategy.java:172) at org.apache.openjpa.jdbc.meta.FieldMapping.load(FieldMapping.java:796) at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:833) at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:785) at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:453) ... 106 more