java.sql.SQLException: Io 异常: Socket read timed out

Posted 2023-05-09

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java.sql.SQLException: Io 异常: Socket read timed out
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.doCommit(T4CConnection.java:533)
at oracle.jdbc.driver.PhysicalConnection.commit(PhysicalConnection.java:1119)
at org.apache.tomcat.dbcp.dbcp.DelegatingConnection.commit(DelegatingConnection.java:334)
at org.apache.tomcat.dbcp.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.commit(PoolingDataSource.java:211)
at org.hibernate.transaction.JDBCTransaction.commitAndResetAutoCommit(JDBCTransaction.java:139)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:115)
at org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:578)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:314)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:629)

你好，提示很清楚嘛，I/O异常：读取失败：连接超时。

可能的情况包括：网线没有插好；其他原因导致和数据库服务器的网络断开；连接数据库的URI不正确；数据库没有正确配置；数据库挂了。

总之一点，没有连上数据库。参考技术A 数据库的请求超时。
可能是要用的表被锁了。追问

不是吧，我查了，木有锁表

参考技术B 将默认超时改长一点追问

改了，都改到一分钟了，还是不行

参考技术C 代码执行时间过长，超时了追问

不会，一天出现78次，不可能是执行时间长了

java.sql.SQLException: Io 异常: NL 异常产生

【中文标题】java.sql.SQLException: Io 异常: NL 异常产生【英文标题】：java.sql.SQLException: Io exception: NL Exception was generated 【发布时间】：2020-01-31 22:53:49 【问题描述】：

我正在使用 spark-sql 2.4.1 尝试使用我的 spark 程序连接 oracle 数据库

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();

我在我的类路径中添加了“ojdbc14.jar”jar。

我遇到了错误

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)

这里有什么问题？如何解决这个问题？

【问题讨论】：

【参考方案1】：

它是与 val o_url =//"jdbc:oracle:thin: etc ...它是正确且有效的

早点