Oracle Data Pump (IMPDP) via Network link

I use Oracle's datapump via network link methodology whenever I need to use data pump instead of taking export, copying over dumpfiles, and then doing import.  The Data pump via network link method is much simpler.


- Create user on SOURCE db to use for network link in TARGET database.
CREATE USER ARTISDBA IDENTIFIED BY "Password123$";
GRANT DBA TO ARTISDBA;

- Create Database link on target
CREATE DATABASE LINK SERVICE_NAME CONNECT TO ARTISDBA IDENTIFIED BY "Password123$" USING 'SERVICE_NAME';

- Copy TNSNAMES entry for source  database to target's tnsnames.ora file.

- Create directory in TARGET to use for your logfiles.
CREATE DIRECTORY dumpdir AS '/orabkup/expdp';
GRANT READ,WRITE ON DIRECTORY dumpdir to PUBLIC;

- Run import job on TARGET.  You parallelize the job to make it faster.
impdp parfile=impdp.par

PARFILE contents:

DIRECTORY=dumpdir
NETWORK_LINK=SERVICE_NAME
SCHEMAS='TEST'
PARALLEL=4
LOGFILE=impdp_from_service_name.log

Comments

Post a Comment

Popular posts from this blog

RMAN-10038: database session for channel prm3 terminated unexpectedly

Problem: I had an issue where I was trying to build a 1.7 TB Data Guard environment and kept receiving the highlighted error below.  I thought it was some type of fluke so I restarted the job 2 more times only to receive the same error. Fix: After researching the issue, I found it was because the sqlnet.ora needed to be configured correctly.  I added the entry " SQLNET.EXPIRE_TIME = 10 " to the sqlnet.ora on both the source and the target database servers under the RDBMS $ORACLE_HOME/network/admin.  Upon restarting the RMAN active database standby build, it was able to move past this error and built successfully. Starting backup at 07-MAY-17 channel prm1: starting datafile copy input datafile file number=00003 name=+DATA/testdb/datafile/undotbs1.262.940412881 channel prm2: starting datafile copy input datafile file number=00129 name=+DATA/testdb/datafile/welldoc1.390.940509955 channel prm3: starting datafile copy input datafile file number=00130 name=+DATA/test
Read more

ORA-17630: Mismatch in the remote file protocol version client 2 server 3

I was trying to create an Oracle Data Guard environment (physical standby) from an Oracle database running version 12.1.0.2. The database was running an older PSU version ("Database Patch Set Update : 12.1.0.2.161018 (24006101)") to be specific. Upon trying to build the standby by using RMAN DUPLICATE with ACTIVE DATABASE, I ran into the below error: executing Memory Script Starting backup at 16-JUL-18 RMAN-03009: failure of backup command on prm1 channel at 07/16/2018 13:51:46 ORA-17629: Cannot connect to the remote database server ORA-17630: Mismatch in the remote file protocol version client 2 server 3 continuing other job steps, job failed will not be re-run released channel: prm1 released channel: prm2 released channel: prm3 released channel: prm4 released channel: prm5 released channel: stb1 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: ====================
Read more

ORA-00338: log {n} of thread {n} is more recent than control file

I received the following error in a primary database's alert log that I was supporting recently.   ORA-00312: online log 5 thread 1: '+DATA/db_name/onlinelog/group_5.297.846947859' ORA-00338: log 5 of thread 1 is more recent than control file The database has a DataGuard environment as well and below are the steps that I took to resolve the issue. 1.  First, I checked the status of the redo logs and their current sizes and status. SQL> select group#,bytes/1024/1024,status from v$log;     GROUP# BYTES/1024/1024 STATUS ---------- --------------- ----------------          1              50 INACTIVE          2              50 INACTIVE          3              50 INACTIVE          4             250 INACTIVE          5             250 INACTIVE          6             250 CURRENT 2.  As you can see, groups 1, 2, 3 have 50 MB redo log group sizes while group 4, 5, 6 are 250 MB redo log group sizes.  This is something that I highly suspect was/is the issue.  So I
Read more