java.sql.SQLException：Io异常：生成NL异常

Question

当我尝试使用我的spark程序连接oracle db时，我正在使用spark-sql 2.4.1

火花程序

val o_url =//"jdbc:oracle:thin: etc ... it is correct and working
val query  ="( SELECT 1 FROM DUAL ) T";
val dfReader   = spark.read.format("jdbc")
       .option("url", o_url)
       .option("driver", "oracle.jdbc.OracleDriver")
       .option("user", "ABC")
       .option("password", "ZYX")
       .option("fetchsize","10000")

val ss = dfReader
                .option("inferSchema", true)
                .option("schema","LDF")
                .option("dbtable", query)
                .load();

println(" Table Count : "+ ss.count());
spark.close();

当然，我在类路径中添加了“ ojdbc14.jar” jar。

我遇到错误

错误

java.sql.SQLException: Io exception: NL Exception was generated
  at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
  at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
  at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:255)
  at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:387)
  at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:414)
  at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:165)
  at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:35)
  at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
  at org.apache.spark.sql.execution.datasources.jdbc.DriverWrapper.connect(DriverWrapper.scala:45)
  at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$$anonfun$createConnectionFactory$1.apply(JdbcUtils.scala:63)
  at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$$anonfun$createConnectionFactory$1.apply(JdbcUtils.scala:54)
  at org.apache.spark.sql.execution.datasources.jdbc.JDBCRDD$.resolveTable(JDBCRDD.scala:56)
  at org.apache.spark.sql.execution.datasources.jdbc.JDBCRelation.<init>(JDBCRelation.scala:115)
  at org.apache.spark.sql.execution.datasources.jdbc.JdbcRelationProvider.createRelation(JdbcRelationProvider.scala:52)
  at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:340)
  at org.apache.spark.sql.DataFrameReader.loadV1Source(DataFrameReader.scala:239)
  at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:227)
  at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:164)

这里怎么了？如何解决此问题？

Answer 1

val o_url = //“ jdbc：oracle：thin：etc ...正确且有效

较早

val o_url =“ jdbc：oracle：thin：@（DESCRIPTION =（ADDRESS =（PROTOCOL = TCP）...; “;

我通过删除“;”将其纠正如下。内引号。

val o_url =“ jdbc：oracle：thin：@（DESCRIPTION =（ADDRESS =（PROTOCOL = TCP）...“;