我正在尝试从远程 Oracle 数据库获取一些数据，因此我配置了与数据库的新连接，当我按下测试时，它表示连接已成功建立，但是当我尝试简单的选择查询时，报表设计器给出我一个错误：
org.pentaho.reporting.engine.classic.core.ReportDataFactoryException: Failed at query: select * from fact_table;
at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.queryData(SimpleSQLReportDataFactory.java:258)
at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SQLReportDataFactory.queryData(SQLReportDataFactory.java:171)
at org.pentaho.reporting.ui.datasources.jdbc.ui.JdbcPreviewWorker.run(JdbcPreviewWorker.java:103)
at java.lang.Thread.run(Unknown Source)
父异常：
java.sql.SQLException: ORA-00911: invalid character
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:305)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:272)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:623)
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:112)
at oracle.jdbc.driver.T4CStatement.execute_for_describe(T4CStatement.java:351)
at oracle.jdbc.driver.OracleStatement.execute_maybe_describe(OracleStatement.java:896)
at oracle.jdbc.driver.T4CStatement.execute_maybe_describe(T4CStatement.java:383)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:986)
at oracle.jdbc.driver.OracleStatement.doScrollExecuteCommon(OracleStatement.java:3763)
at oracle.jdbc.driver.OracleStatement.doScrollStmtExecuteQuery(OracleStatement.java:3887)
at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1131)
at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.parametrizeAndQuery(SimpleSQLReportDataFactory.java:422)
at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.queryData(SimpleSQLReportDataFactory.java:254)
at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SQLReportDataFactory.queryData(SQLReportDataFactory.java:171)
at org.pentaho.reporting.ui.datasources.jdbc.ui.JdbcPreviewWorker.run(JdbcPreviewWorker.java:103)
at java.lang.Thread.run(Unknown Source)
那么我该如何完成呢？