错误ORA-12154在Oracle数据集成器

Question

我得到的错误，当我运行的映射。

我创建了一个“新的数据服务器”

我可以成功地测试通过点击“测试连接”按钮连接。

但映射不能成功运行。完整的错误信息如下：

ODI-1228: Task Merge rows-IKM Oracle Merge-Load USERS fails on the target connection DB-TARGET.
Caused By: java.sql.SQLException: ORA-12154: TNS:невозможно разрешить заданный идентификатор соединения

    at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:495)
    at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:447)
    at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:1055)
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:624)
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:253)
    at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:613)
    at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:214)
    at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:38)
    at oracle.jdbc.driver.T4CStatement.executeForRows(T4CStatement.java:891)
    at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1194)
    at oracle.jdbc.driver.OracleStatement.executeInternal(OracleStatement.java:1835)
    at oracle.jdbc.driver.OracleStatement.execute(OracleStatement.java:1790)
    at oracle.jdbc.driver.OracleStatementWrapper.execute(OracleStatementWrapper.java:301)
    at oracle.odi.runtime.agent.execution.sql.SQLCommand.execute(SQLCommand.java:205)
    at oracle.odi.runtime.agent.execution.sql.SQLExecutor.execute(SQLExecutor.java:142)
    at oracle.odi.runtime.agent.execution.sql.SQLExecutor.execute(SQLExecutor.java:28)
    at oracle.odi.runtime.agent.execution.TaskExecutionHandler.handleTask(TaskExecutionHandler.java:52)
    at oracle.odi.runtime.agent.execution.SessionTask.processTask(SessionTask.java:206)
    at oracle.odi.runtime.agent.execution.SessionTask.doExecuteTask(SessionTask.java:117)
    at oracle.odi.runtime.agent.execution.AbstractSessionTask.execute(AbstractSessionTask.java:886)
    at oracle.odi.runtime.agent.execution.SessionExecutor$SerialTrain.runTasks(SessionExecutor.java:2225)
    at oracle.odi.runtime.agent.execution.SessionExecutor.executeSession(SessionExecutor.java:610)
    at oracle.odi.runtime.agent.processor.TaskExecutorAgentRequestProcessor$1.doAction(TaskExecutorAgentRequestProcessor.java:718)
    at oracle.odi.runtime.agent.processor.TaskExecutorAgentRequestProcessor$1.doAction(TaskExecutorAgentRequestProcessor.java:611)
    at oracle.odi.core.persistence.dwgobject.DwgObjectTemplate.execute(DwgObjectTemplate.java:203)
    at oracle.odi.runtime.agent.processor.TaskExecutorAgentRequestProcessor.doProcessStartAgentTask(TaskExecutorAgentRequestProcessor.java:800)
    at oracle.odi.runtime.agent.processor.impl.StartSessRequestProcessor.access$1400(StartSessRequestProcessor.java:74)
    at oracle.odi.runtime.agent.processor.impl.StartSessRequestProcessor$StartSessTask.doExecute(StartSessRequestProcessor.java:702)
    at oracle.odi.runtime.agent.processor.task.AgentTask.execute(AgentTask.java:180)
    at oracle.odi.runtime.agent.support.DefaultAgentTaskExecutor$2.run(DefaultAgentTaskExecutor.java:108)
    at java.lang.Thread.run(Thread.java:748)
Caused by: Error : 12154, Position : 154, Sql = 
    MERGE 
  INTO TARGET.USERS USERS
  USING
  (
SELECT 
  USE.NAME AS NAME ,
  USE.PASSWD AS PASSWD ,
  USE.USER_ROLE AS USER_ROLE   
FROM 
  **SOURCE.USERS@"MySource" USE**  
  ) MERGE_SUBQUERY
  ON
  (
    USERS.NAME = MERGE_SUBQUERY.NAME 
   )
  WHEN NOT MATCHED THEN
    INSERT
    (
      NAME ,
      PASSWD ,
      USER_ROLE 
    )
    VALUES
    (
      MERGE_SUBQUERY.NAME ,
      MERGE_SUBQUERY.PASSWD ,
      MERGE_SUBQUERY.USER_ROLE 
    )
  WHEN MATCHED THEN
    UPDATE SET
      PASSWD = MERGE_SUBQUERY.PASSWD ,
      USER_ROLE = MERGE_SUBQUERY.USER_ROLE    , OriginalSql = 
    MERGE 
  INTO TARGET.USERS USERS
  USING
  (
SELECT 
  USE.NAME AS NAME ,
  USE.PASSWD AS PASSWD ,
  USE.USER_ROLE AS USER_ROLE   
FROM 
  SOURCE.USERS@"MySource" USE  
  ) MERGE_SUBQUERY
  ON
  (
    USERS.NAME = MERGE_SUBQUERY.NAME 
   )
  WHEN NOT MATCHED THEN
    INSERT
    (
      NAME ,
      PASSWD ,
      USER_ROLE 
    )
    VALUES
    (
      MERGE_SUBQUERY.NAME ,
      MERGE_SUBQUERY.PASSWD ,
      MERGE_SUBQUERY.USER_ROLE 
    )
  WHEN MATCHED THEN
    UPDATE SET
      PASSWD = MERGE_SUBQUERY.PASSWD ,
      USER_ROLE = MERGE_SUBQUERY.USER_ROLE    , Error Msg = ORA-12154: TNS:невозможно разрешить заданный идентификатор соединения

    at oracle.jdbc.driver.T4CTTIoer11.processError(T4CTTIoer11.java:499)
    ... 30 more

不要用错误ORA-12154的俄罗斯描述相混淆。这意味着TNS：无法解析指定的连接标识符。

tnsnames.ora文件存在。我还可以连接使用SQL开发

经过一番调查，在我看来，该线

SOURCE.USERS@"MySource" USE

是罪魁祸首

但在此之前被执行这个脚本执行ODI另一个脚本，并成功执行了。下面是它的内容：

create database link "MySource" connect to SOURCE identified by <@=odiRef.getInfo("SRC_PASS") @> using '***'

Answer 1

我在SQL Developer中运行查询和与真实值替换<@=odiRef.getInfo("SRC_PASS") @>。

我可以重现错误。

我跑下面的查询，以确保该DBLINK已经建立：

select * from all_db_links;

然后，我撞上了讨论，其中有人建议以这种方式创建数据库链接：

create database link "MySource" connect to SOURCE identified by *** using 
'(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = oracle.****.***.**)
    )
)';

有效。我可以用在后续查询此链接。但是我注意到一个较短的方式是通过只使用SID来创建DBLINK：

create database link "MySource" connect to SOURCE identified by *** using oracle;

所以我切换到ODI和变化中的所有数据服务器使用的连接字符串从jdbc:oracle:thin:@<host>:<port>/<service name>的格式jdbc:oracle:thin:@<host>:<port>:<sid>

这解决了这个问题。我可以成功运行的映射。

不知道为什么不能使用一个基于服务名称创建一个DBLINK。

Oracle并根据实况没有禁止它

CREATE DATABASE LINK：

https://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_5005.htm