Tips and Tricks by Sheik

How to find if Weblogic is installed in a server In this topic, we will cover two scenarios a) How to find if weblogic product is installed in the server b) How to find the path of weblogic installed How to find if weblogic product is installed : We will go through the topic one by one , lets take the first scenario. You are given a server , where you are asked to check what are the products installed. Assume, we are checking it if any weblogic product is installed in the machine. Where you will start ?. I think we normally go with a command to see if any process associated with the weblogic product is running. Correct, ps -ef | grep -i weblogic will show the list of process running for weblogic. What if, weblogic product is installed but none of the process running. How would you able to get to know now ?. Still thinking..... Since weblogic product can be installed any directories and with any user. I suggest you to use below command to fetch the information. locate -r server/lib/webl...

JAVA_HOME not set error while using opatch command   This is very common error we see while using opatch command, whether you are using it for listing the patches or using it for applying the patches. So how to fix it ? Error : JAVA_HOME is not set or does not exist I see there are two ways to fix this error. 1) Explicitly set the JAVA_HOME value by export JAVA_HOME=<JAVA_PATH>  pls make sure dont include bin the JAVA_PATH value example as below : Now try executing the command. Hopefully it will fix the issue. if not, pls follow the alternate procedure given below  2) There is a parameter ( -jre) we shall pass it while executing the opatch command. It will get you the desired result. example as below : opatch lspatches -jre <java-path>  

How to find the list of patches applied in Weblogic 12c   As you know oracle is releasing critical patches every quarter. It is highly recommended to apply the patch in the servers whenever its released. To see what are the patches applied in the server, follow the below way to find out. 1) Go to <installation_dir>. Follow the link if you dont know Find the weblogic home directory 2) Navigate to Opatch folder 3) execute the command ./opatch patches 4) It will show the list of patches applied in the environment along with the dates its applied. To know when the patch is applied on the environment. Follow the link  Find the date and time of weblogic patch applied