[Oracle] Data Pump詳細使用教程（5）- 命令交互模式
[Oracle] Data Pump詳細使用教程（4）- Network_link
http://www.bitsCN.com/database/201308/232536.html
當我們起了一個datapump job之後，可以通過v$session_longops查看當前進度。
[plain]
USERNAME - job owner
OPNAME - job name
TARGET_DESC - job operation
SOFAR - megabytes transferred thus far during the job
TOTALWORK - estimated number of megabytes in the job
UNITS - megabytes (MB)
message - a formatted status message of the form:
'job_name: operation_name : nnn out of mmm MB done'
[sql]
SYS@TEST16>select username,opname,sofar,TOTALWORK,UNITS,message from v$session_longops where opname='SYS_EXPORT_FULL_03';
USERNAME OPNAME SOFAR TOTALWORK UNITS MESSAGE
--------------- -------------------- ---------- ---------- ----- ------------------------------------------------------------
system SYS_EXPORT_FULL_03 4737 35368 MB SYS_EXPORT_FULL_03: EXPORT : 4737 out of 35368 MB done
但有時候單單監控是不夠的，我們可能還需要修改相應的JOB，這時我們就需要進行datapumo的命令交互模式。
有兩種方式可以進入命令交互模式，分別是：
1. 在logging模式下按ctrl+C
2. expdp or impdp attach=SYSTEM.SYS_EXPORT_FULL_03
expdp交互模式的命令如下：
Activity command Used
Add additional dump files.
ADD_FILE
Exit interactive mode and enter logging mode.
CONTINUE_CLIENT
Stop the export client session, but leave the job running.
EXIT_CLIENT
Redefine the default size to be used for any subsequent dump files.
FILESIZE
Display a summary of available commands.
HELP
Detach all currently attached client sessions and terminate the current job.
KILL_JOB
Increase or decrease the number of active worker processes for the current job. This command is valid only in the Enterprise Edition of Oracle Database 11g.
PARALLEL
Restart a stopped job to which you are attached.
START_JOB
Display detailed status for the current job and/or set status interval.
STATUS
Stop the current job for later restart.
STOP_JOB
impdp的交互模式命令如下：
Activity Command Used
Exit interactive-command mode.
CONTINUE_CLIENT
Stop the import client session, but leave the current job running.
EXIT_CLIENT
Display a summary of available commands.
HELP
Detach all currently attached client sessions and terminate the current job.
KILL_JOB
Increase or decrease the number of active worker processes for the current job. This command is valid only in Oracle Database Enterprise Edition.
PARALLEL
Restart a stopped job to which you are attached.
START_JOB
Display detailed status for the current job.
STATUS
Stop the current job.
STOP_JOB
下面以expdp為例，介紹幾個常用命令（如果忘記命令，敲萬能的help）。
1. status：查看當前job的狀態，如完成的百分比、並行度等，每個worker代表一個並行進程。
[sql]
Export> status
Job: SYS_EXPORT_FULL_03
Operation: EXPORT
Mode: FULL
State: EXECUTING
Bytes Processed: 8,357,285,928
Percent Done: 23
Current Parallelism: 2
Job Error Count: 0
Dump File: /home/oracle/dump/full_%u.dmp
Dump File: /home/oracle/dump/full_01.dmp
bytes written: 8,357,294,080
Dump File: /home/oracle/dump/full_02.dmp
bytes written: 4,096
Worker 1 Status:
Process Name: DW00
State: EXECUTING
Object Type: DATABASE_EXPORT/SCHEMA/TABLE/COMMENT
Completed Objects: 5,120
Worker Parallelism: 1
Worker 2 Status:
Process Name: DW01
State: EXECUTING
Object Schema: P95169
Object Name: GRADE_RCCASE
Object Type: DATABASE_EXPORT/SCHEMA/TABLE/TABLE_DATA
Completed Objects: 3
Total Objects: 1,866
Completed Rows: 23,505,613
Worker Parallelism: 1
2. parallel：動態調整並行度
[plain]
Export> parallel=4
3. add_file：增加dumpfile
[plain]
Export> ADD_FILE=hr2.dmp, dpump_dir2:hr3.dmp
4. stop_job, kill_job, start_job
stop_job只是暫停，之後可以用start_job重新啟動，而kill_job直接殺掉，不可恢復
5. continue_client：退出交互模式，進入logging模式；
exit_client: 退出客戶端
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