ORA-16047: DGID mismatch between destination setting and target database

In our previous blog ,We have seen how to resolve the dataguard ORA- error related to ORA-19573: cannot obtain exclusive enqueue for datafile 1 RM. In this blog, I will explain you... Read more »

TNS-01150: The address of the specified listener name is incorrect

Below error occur while checking the status of listener or starting the listener services. TNS-01150: The address of the specified listener name is incorrectNL-00303: syntax error in NV string Above error can... Read more »

ORA-19573: cannot obtain exclusive enqueue for datafile 1 RM

Received below error while doing the dataguard restoration on standby database. RMAN-03002: failure of restore command at 06/30/2019 13:23:19 ORA-19870: error while restoring backup piece /data/rman/CDB/CDB1_D_20190607_0au 3g8ip_s10_p1 ORA-19573: cannot obtain exclusive enqueue... Read more »

Oracle dba jobs will die in future due to autonomous database ?

Many dba’s have the question related to oracle dba career and opportunity of oracle dba in future and worried about whether oracle dba jobs will die in future. oracle dba is serious... Read more »

listener.ora and tnsnames.ora location in oracle 12c database

In our previous blog We have seen about the error message related to the address of tnsnames.ora file. In this blog we will see the location of listener.ora and tnsnames.ora file .... Read more »

Difference between delete and truncate in oracle database ?- SQL Interview question

In my previous blog , I have written about the future of oracle dbs jobs. If you are going for sql or oracle interview then most of the interviewer expect that you... Read more »

How to put database in Archive/No-Archive log mode?- Oracle Interview question

In this blog I will show you the importance of archive and no-archive log mode. Mode of Logging There are two types of logging modes in Oracle database :- 1. ARCHIVELOG :-... Read more »

How to Set ORACLE_HOME & ORACLE_SID on Windows Server

We will be finding out the way to set oracle environment path for windows server. What is ORACLE_HOME used for? The ORACLE_HOME is an environment variable which is used to set and... Read more »

How to check oracle database status – Interview question

let us find out the database health status by using following sql command. Check whether the Oracle Process run or not#> ps -ef | grep pmon If no pmon detected, your database... Read more »

How to change sys & System user password in Oracle 12C database

We cannot change the sys and system password in usual way as like till 11g. we have different method to do same. following blog describe the way to change user password in... Read more »