Tips：datapump异常中断后的处理

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     oracle数据库在10g的时候推出datapump，expdp/impdp现已成为dba导数的常用工具了。上次客户联系说，在终止expdp进程后，系统空间还是在增长，可用空间越来越小。问了下客户是怎么关闭expdp的，说是一次ctrc+C，一次kill expdp进程....
    expdp/impdp的启动，是以job的形式在数据库后台运行。如果只是关闭进程，或者异常退出，是无法停止expdp/impdp，因为job还是在数据库里运行。这个时候处理方式是关闭数据库中expdp/impdp的job。

先登录数据库，确认expdp对应的job名称

SQL> select job_name,state from dba_datapump_jobs;
JOB_NAME                       STATE
------------------------------ ------------------------------
SYS_EXPORT_TABLE_01            EXECUTING
SYS_EXPORT_TABLE_02            EXECUTING

果然数据库有两个expdp进程跑着呢...


正确的处理方式：

SQL> select job_name,state from dba_datapump_jobs;


JOB_NAME                       STATE
------------------------------ ------------------------------
SYS_EXPORT_FULL_01             EXECUTING


[oracle@ora11g dp_dir]$ 
[oracle@ora11g dp_dir]$ expdp \'/ as sysdba\' attach=SYS_EXPORT_FULL_01


Export: Release 11.2.0.4.0 - Production on Thu Dec 15 11:26:31 2016


Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.


Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options


Job: SYS_EXPORT_FULL_01
  Owner: SYS                            
  Operation: EXPORT                         
  Creator Privs: TRUE                           
  GUID: 43AB008C575C06AAE053E638A8C0C450
  Start Time: Thursday, 15 December, 2016 11:25:24
  Mode: FULL                           
  Instance: ora11g
  Max Parallelism: 1
  EXPORT Job Parameters:
  Parameter Name      Parameter Value:
     CLIENT_COMMAND        "/******** AS SYSDBA" DIRECTORY=dp_dir DUMPFILE=db.dump full=y 
  State: EXECUTING                      
  Bytes Processed: 0
  Current Parallelism: 1
  Job Error Count: 0
  Dump File: /home/oracle/dp_dir/db.dump
    bytes written: 4,096
  
Worker 1 Status:
  Process Name: DW00
  State: EXECUTING                      
  Object Schema: SYSMAN
  Object Name: AQ$_MGMT_LOADER_QTABLE_G
  Object Type: DATABASE_EXPORT/SCHEMA/TABLE/TABLE
  Completed Objects: 1
  Worker Parallelism: 1


Export> stop_job /stop_job=immediate 
Are you sure you wish to stop this job ([yes]/no): yes 


[oracle@ora11g dp_dir]$ expdp \'/ as sysdba\' attach=SYS_EXPORT_FULL_01


Export: Release 11.2.0.4.0 - Production on Thu Dec 15 11:27:27 2016


Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.


Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options


Job: SYS_EXPORT_FULL_01
  Owner: SYS                            
  Operation: EXPORT                         
  Creator Privs: TRUE                           
  GUID: 43AB008C575C06AAE053E638A8C0C450
  Start Time: Thursday, 15 December, 2016 11:27:30
  Mode: FULL                           
  Instance: ora11g
  Max Parallelism: 1
  EXPORT Job Parameters:
  Parameter Name      Parameter Value:
     CLIENT_COMMAND        "/******** AS SYSDBA" DIRECTORY=dp_dir DUMPFILE=db.dump full=y 
  State: IDLING                         
  Bytes Processed: 0
  Current Parallelism: 1
  Job Error Count: 0
  Dump File: /home/oracle/dp_dir/db.dump
    bytes written: 4,096
  
Worker 1 Status:
  Process Name: DW00
  State: UNDEFINED                      


Export> kill_job
Are you sure you wish to stop this job ([yes]/no): yes

于是乎处理完毕。因此在expdp/impdp的时候不要随意的kill或者终止进程。
---The end