Use data pump +dblink to migrate databases for low-local space conditions

Col Name forA40select Name,locks,pinsfrom v$db _object_cachewhere Locks> 0 and pins > 0 and type=' PROCEDURE ';10.21.1.20 and 10.24.51. 112 database DBLIBK has been built, the main IMPDP on it, altogether need to export the drop user Ilearn_tra Cascade;drop user ila_sap Cascade;drop use R ilearn_job Cascade;drop user ilearn cascade;drop user Ilearn_beiyan Cascade;drop user apex_public_use R cascade;srvctl Stop Database-d ilndbsrvctl Start Database-d ilndbselect sid,job from dba_jobs_running; Machine PORT TERMINAL Program Select Username,sid,serial#From gv$session where username = ' Ilearn_tra ';Select Username,sid,serial#From v$session where username = ' Ilearn_tra ';USERNAME SID SERIAL#------------------------------ ---------- ----------Ilearn_tra2545 5ALTER SYSTEM KILL SESSION '2545,5'; SELECT sid,serial#From v$session WHERE username= ' Ilearn_tra ';these few users under the data, when the official migration,10.21.1.20 on these user data to be deleted, the whole process is time-consuming 10:15:38This is the log of the last Test SYS@ilndb1 > select name from V$database@Dblink_datapump; NAME---------ilndb dblink Guide Library process:1, create Dblink in the client database and the directory where you want to save the data file: Create public link Dblink_datapump connect to system identified by Clic1234 us ing '10.24.51.12:1521/ilndb '; select name from V$database@dblink_datapump; Create or replace directory Expdp_dir as '/oracle/EXPDP '; Grant read, write on directory expdp_dir to public;2, creating a related tablespace in the client database and user create tablespace ilearn_data datafile '+DATADG ' SIZE 32767M autoextend off; //compared to the production end, the full table space capacity create user Ilearn_tra identified by"Qwer4321" defaulttablespace Ilearn_data; grant Resource,connect to Ilearn_tra;3, import nohup IMPDP system using IMPDP in client database/clic1234 network_link=dblink_datapump logfile=impdp_ilearn1.log directory=expdp_dir Schemas=ILEARN_TRA EXCLUDE= Statistics Cluster=n Job_name=sys_import_ilearn_tra parallel=20 &Select sum (bytes/1024/1024) from Dba_segments where owner=' Ilearn_tra '; IMPDP system/clic1234 network_link=dblink_datapump logfile=impdp_ilearn3.log directory=expdp_dir Schemas=ILEARN EXCLUDE= Statistics Cluster=n Job_name=sys_import_ilearn parallel=20Select sum (bytes/1024/1024) from Dba_segments where owner=' Ilearn '; IMPDP system/clic1234 network_link=dblink_datapump logfile=impdp_ilearn2.log directory=expdp_dir Schemas=ILA_SAP EXCLUDE= Statistics Cluster=n JOB_NAME=SYS_IMPORT_ILA_SAP parallel=14--WANCHENGIMPDP System/clic1234 network_link=dblink_datapump logfile=impdp_ilearn4.log directory=expdp_dir Schemas=ilearn_beiyan EXCLUDE= Statistics Cluster=n Job_name=sys_import_ilearn_beiyan parallel=14--Wancheng IMPDP System/clic1234 network_link=dblink_datapump logfile=impdp_ilearn4.log directory=expdp_dir schemas=ilearn_job EXCLUDE= Statistics Cluster=n Job_name=sys_import_ilearn_job parallel=14--WANCHENGIMPDP System/clic1234 network_link=dblink_datapump logfile=impdp_ilearn5.log Directory=expdp_dir Schemas=APEX_PUBLIC_USER Exclude=statistics cluster=n Job_name=sys_import_ilearn_apex parallel=14Wancheng4, delete dblink:drop public database link Dblink_datapump in the client databases; Good luck and all the best nohup IMPDP system/clic1234 network_link=dblink_datapump logfile=impdp_ilearn_1210.log Directory=expdp_dir schemas=ILEARN_TRA,ILA_ Sap,ilearn_job,ilearn,ilearn_beiyan,apex_public_user exclude=statistics cluster=n job_name=SYS_IMPORT_1210 Parallel=14 &ilearn_tra,ila_sap,ilearn_job,ilearn,ilearn_beiyan,apex_public_usercreate User View_lms_workbooks identified by Clic1234defaulttablespace ilearn_data account unlock; Create_and_view_lms_workbooks

Use data pump +dblink to migrate databases for low-local space conditions