Recreate/drop Oracle database link for another schema/user

Have you ever needed to recreate/drop a database link for another user/schema owner in an Oracle database?  Here's how I did it. 

-- recreate Database link
CREATE PROCEDURE schema_owner.create_db_lnk AS
BEGIN
    EXECUTE IMMEDIATE 'CREATE DATABASE LINK COGNOS.WORLD '
            ||'CONNECT TO CRUD IDENTIFIED BY "password123" '
            ||'USING ''(description=(address=(protocol=tcp)(host=host-scan)(port=1521))(connect_data=(service_name=test.artisdba.com)))''';
END create_db_lnk;
/
exec schema_owner.create_db_lnk;
drop procedure schema_owner.create_db_lnk;

-- Drop database link
CREATE PROCEDURE schema_owner.drop_db_lnk AS
BEGIN
     EXECUTE IMMEDIATE 'DROP DATABASE LINK COGNOS.WORLD';
END drp_db_lnk;
/
exec schema_owner.drop_db_lnk;
drop procedure schema_owner.drop_db_lnk;

Comments

Post a Comment

Popular posts from this blog

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   ...
Read more

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/...
Read more