Oracle: Connection Reset Errors 錯誤代碼 11/05/26 16:23:47 INFO mapred.JobClient: Task Id : attempt_201105261333_0002_m_000002_0, Status : FAILED java.lang.RuntimeException: java.lang.RuntimeException: java.sql.SQLRecoverableException: IO Error: Connection reset at com.cloudera.sqoop.mapreduce.db.DBInputFormat.setConf(DBInputFormat.java:164) at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:62) at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:605) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:322) at org.apache.hadoop.mapred.Child$4.run(Child.java:268) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1115) at org.apache.hadoop.mapred.Child.main(Child.java:262) Caused by: java.lang.RuntimeException: java.sql.SQLRecoverableException: IO Error: Connection reset at com.cloudera.sqoop.mapreduce.db.DBInputFormat.getConnection(DBInputFormat.java:190) at com.cloudera.sqoop.mapreduce.db.DBInputFormat.setConf(DBInputFormat.java:159) ... 9 more 這個問題的產生原因是由於缺少一個生成隨機數的設備 找到 $JAVA_HOME/jre/lib/security目錄下的java.security文件 修改securerandom.source=file:/dev/../dev/urandom Oracle: Case-Sensitive Catalog Query Errors 下面是錯誤代碼 1/09/21 17:18:49 INFO manager.OracleManager: Time zone has been set to GMT 11/09/21 17:18:49 DEBUG manager.SqlManager: Using fetchSize for next query: 1000 11/09/21 17:18:49 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM addlabel_pris t WHERE 1=0 11/09/21 17:18:49 DEBUG manager.OracleManager$ConnCache: Caching released connection for jdbc:oracle:thin: 11/09/21 17:18:49 ERROR sqoop.Sqoop: Got exception running Sqoop: java.lang.NullPointerException java.lang.NullPointerException at com.cloudera.sqoop.hive.TableDefWriter.getCreateTableStmt(TableDefWriter.java:148) at com.cloudera.sqoop.hive.HiveImport.importTable(HiveImport.java:187) at com.cloudera.sqoop.tool.ImportTool.importTable(ImportTool.java:362) at com.cloudera.sqoop.tool.ImportTool.run(ImportTool.java:423) at com.cloudera.sqoop.Sqoop.run(Sqoop.java:144) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at com.cloudera.sqoop.Sqoop.runSqoop(Sqoop.java:180) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:219) at com.cloudera.sqoop.Sqoop.runTool(Sqoop.java:228) at com.cloudera.sqoop.Sqoop.main(Sqoop.java:237) 解決方式：用戶名和表名全用大寫 Oracle: ORA-00933 error (SQL command not properly ended) 如果沒有指定的話，sqoop會默認使用oracle.jdbc.OracleDriver Omit選項 --driver oracle.jdbc.driver.OracleDriver 然后重新提交 MySQL: Import of TINYINT(1) from MySQL behaves strangely jdbc會把tinyint（1）認為是java.sql.Types.BIT,然后sqoop就會轉為Boolean了，悲劇吧 解決方法：在連接上加上一句話tinyInt1isBit=false jdbc:mysql://localhost/test?tinyInt1isBit=false 另一種解決方式是 hive使用 --map-column-hive foo=tinyint 非hive使用--map-column-java foo=integer