Oracle Data Pump

– Data Pump runs only on the server side.
– You may initiate the export from a client but the job(s) themselves will run inside an Oracle server.
– There are no dump files (expdat.dmp) or log files that will be created on your local machine

How to use DataPUMP?

To Export Entire Database use FULL =Y , for schema use schemas=<USERNAMES>

FULL expdp system/XXX FULL=y DIRECTORY=dexport DUMPFILE=expdata.dmp LOGFILE=expdata.log
Schema expdp system SCHEMA=DOTCOM DIRECTORY=export DUMPFILE=expdata.dmp LOGFILE=expdata.log

Data pump could be used over Database link as an example below
SQL-S2> CREATE DATABASE LINK S1 CONNECT TO JKOOP IDENTIFIED BY PWD USING ‘S1’;

SQL-S2> CREATE DIRECTORY mydump AS ‘/app/oracle/admin/itctvt/export’ ;

E:> expdp jkoop/pwd FULL=y DIRECTORY=mydump NETWORK_LINK=S1 DUMPFILE=byDB.dmp LOGFILE=byDB.log

Introduction to Monitoring Data Pump
DBA_DATAPUMP_JOBS : This view will show the active Data Pump jobs, their state, degree of parallelism, and the number of sessions attached.

SQL> select * from dba_datapump_jobs

OWNER_NAME JOB_NAME OPERATION JOB_MODE STATE DEGREE ATTACHED_SESSIONS
———- ———————- ———- ———- ————- ——— —————–
JKOOP SYS_EXPORT_FULL_01 EXPORT FULL EXECUTING 1 1
JKOOP SYS_EXPORT_SCHEMA_01 EXPORT SCHEMA EXECUTING 1 1

DBA_DATAPUMP_SESSIONS : This view give gives the SADDR that assist in determining why a Data Pump session may be having problems. Join to the V$SESSION view for further information.
SQL> SELECT * FROM DBA_DATAPUMP_SESSIONS

OWNER_NAME JOB_NAME SADDR
———- —————————— ——–
JKOOPMANN SYS_EXPORT_FULL_01 225BDEDC
JKOOPMANN SYS_EXPORT_SCHEMA_01 225B2B7C

V$SESSION_LONGOPS :This view helps determine how well a Data Pump export is doing. Basically gives you a progress indicator through the MESSAGE column.
SQL> select username,opname,target_desc,sofar,totalwork,message from V$SESSION_LONGOPS

USERNAME OPNAME TARGET_DES SOFAR TOTALWORK MESSAGE
——– ——————– ———- —– ———- ————————————————
JKOOP SYS_EXPORT_FULL_01 EXPORT 132 132 SYS_EXPORT_FULL_01:EXPORT:132 out of 132 MB done
JKOOP SYS_EXPORT_FULL_01 EXPORT 90 132 SYS_EXPORT_FULL_01:EXPORT:90 out of 132 MB done
JKOOP SYS_EXPORT_SCHEMA_01 EXPORT 17 17 SYS_EXPORT_SCHEMA_01:EXPORT:17 out of 17 MB done
JKOOP SYS_EXPORT_SCHEMA_01 EXPORT 19 19 SYS_EXPORT_SCHEMA_01:EXPORT:19 out of 19 MB done