如何加速从oracle数据库中读取数据到pentaho数据集成？

Question

我正在使用pentaho数据集成5.4.1.130和Oracle 12c。我使用ojdbc7.jar成功连接了oracle数据库（使用jre 1.7.0.51 for pentaho）。但是当我试图在转换中预览Oracle数据库中的表时，出现以下错误。

在此先感谢。

这里的日志：

2017/04/18 17:15:49 - Version checker - OK 
2017/04/18 18:16:53 - /Transformation 1 - Dispatching started for transformation [/Transformation 1] 
2017/04/18 18:16:56 - Table input.0 - ERROR (version 5.4.0.1-130, build 1 from 2015-06-14_12-34-55 by buildguy) : Unexpected error 
2017/04/18 18:16:56 - Table input.0 - ERROR (version 5.4.0.1-130, build 1 from 2015-06-14_12-34-55 by buildguy) : org.pentaho.di.core.exception.KettleDatabaseException: 
2017/04/18 18:16:56 - Table input.0 - An error occurred executing SQL: 
2017/04/18 18:16:56 - Table input.0 - select * from "APPS"."PO_VENDORS"; 
2017/04/18 18:16:56 - Table input.0 - ORA-00933: SQL command not properly ended 

2017/04/18 18:16:56 - Table input.0 - 
2017/04/18 18:16:56 - Table input.0 - at org.pentaho.di.core.database.Database.openQuery(Database.java:1722) 
2017/04/18 18:16:56 - Table input.0 - at org.pentaho.di.trans.steps.tableinput.TableInput.doQuery(TableInput.java:224) 
2017/04/18 18:16:56 - Table input.0 - at org.pentaho.di.trans.steps.tableinput.TableInput.processRow(TableInput.java:138) 
2017/04/18 18:16:56 - Table input.0 - at org.pentaho.di.trans.step.RunThread.run(RunThread.java:62) 
2017/04/18 18:16:56 - Table input.0 - at java.lang.Thread.run(Unknown Source) 
2017/04/18 18:16:56 - Table input.0 - Caused by: java.sql.SQLSyntaxErrorException: ORA-00933: SQL command not properly ended 

2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:450) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:399) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1017) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:655) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:249) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:566) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:202) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:45) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:766) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.OracleStatement.executeMaybeDescribe(OracleStatement.java:897) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1034) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:1244) 
2017/04/18 18:16:56 - Table input.0 - at oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatementWrapper.java:420) 
2017/04/18 18:16:56 - Table input.0 - at org.pentaho.di.core.database.Database.openQuery(Database.java:1711) 
2017/04/18 18:16:56 - Table input.0 - ... 4 more 
2017/04/18 18:16:56 - Table input.0 - Finished reading query, closing connection. 
2017/04/18 18:16:56 - Table input.0 - Finished processing (I=0, O=0, R=0, W=0, U=0, E=1) 
2017/04/18 18:16:56 - /Transformation 1 - Transformation detected one or more steps with errors. 
2017/04/18 18:16:56 - /Transformation 1 - Transformation is killing the other steps! 

Answer 1

检查日志正常。您的SQL语法存在错误。不要使用双引号。如果您必须使用它们，请确保您正确使用该案例。

在Oracle的标识符周围放置双引号引起Oracle将标识符视为区分大小写，而不是使用大小写不敏感的默认值。如果用名称周围的双引号创建表（或列），则必须始终使用双引号引用标识符，并通过正确指定大小写（除了所有大写标识符，其中双引号是无意义的）。