Environment Variables

$Unable to launch the Java Virtual Machine Located at path sqldeveloper\jdk\jre\bin\server\jvm.dll$

How to Resolve Unable to launch the Java Virtual Machine Located at path

by Ed Chen
May 31, 2022March 20, 2023
2 Comments

Unable to launch the Java Virtual Machine Saw an error dialog when I launch SQL Developer for the first time. Unable to launch the Java… Read More »

How to Resolve opatchauto must run from one of the homes specified

by Ed Chen
September 30, 2020September 14, 2020
2 Comments

opatchauto must run from one of the homes specified Met an error when I tried to apply a patch by root. [root@primary01 ~]# opatchauto apply… Read More »

Oracle Client vs Instant Client

by Ed Chen
March 1, 2019March 1, 2023

Here I list their differences including features, pros and cons for you to evaluate which one should be used for your clients: Oracle Client Features… Read More »

How to Resolve "tnsping command not found" or "tnsping is not recognized as an internal or external command"

by Ed Chen
February 8, 2019November 11, 2021
2 Comments

tnsping command not found This type of error message tnsping command not found in Linux or tnsping is not recognized as an internal or external… Read More »

How to Set NLS_DATE_FORMAT in RMAN

by Ed Chen
October 9, 2012March 22, 2023

NLS_DATE_FORMAT for RMAN After you set RMAN log location, the next problem that you want to solve is the format of timestamp in the log,… Read More »