Issues you may encounter during weblogic 14c installations
The common issues you may encounter during installation if you don't meet prerequisites for installations.
1) You may run out of the disk space if there is no enough space on the Linux or windows system. The minimum disk space is required to install weblogic 14c is approximately 1.1G. You may encounter out of space issues if you have empty space less than that.
2) You may encounter /tmp file system space issue if you dont have enough space on the /tmp. /tmp should have 2.5 times of actual installation. Lets say if installation requires approximately 1.1G then your /tmp file system should have free space of 2.75G (1.1x2.5)
3) JDK compatibility: If you have different JDK version installed than the required then your installation may fail. For example, JDK8 or JDK11 and above are required for weblogic 14c and if you have installed lower version of jdk then your installation will fail.
4) After installation of weblogic and when you are running JVMs you may encounter too may open files issues due to ulimit configuration. make sure you have updated right ulimit size as per the requirement. Example 1024 or 2048 . In come case your ulimit could be unlimited
5) You may encounter network issues during installation if you don't correct entries in /etc/host file. Make sure to run nslookup and reverse lookup commands on the Linux Machine.
6) Installation may fail if you haven't met Linux operating system requirement which are like missing packages required for weblogic14c of linux os etc.
Installation failure:
java -jar fmw_14.1.1.0.0_wls_lite_generic.jar
Launcher log file is /tmp/OraInstall2021-01-10_07-41-53AM/launcher2021-01-10_07-41-53AM.log.
Extracting the installer . . . . . . . . . . . . . . . . . . Done
Checking if CPU speed is above 300 MHz. Actual 2893.177 MHz Passed
Checking monitor: must be configured to display at least 256 colors. DISPLAY environment variable not set. Failed <<<<
Checking swap space: must be greater than 512 MB. Actual 0 MB Failed <<<<
Checking temp space: must be greater than 300 MB. Actual 35323 MB Passed
Some system prerequisite checks failed.
You must fulfill these requirements before continuing.
1) Error: Checking swap space: must be greater than 512 MB. Actual 0 MB Failed <<<<
Check the Mem and swap space
free -mh
total used free shared buffers cached
Mem: 489M 456M 33M 364K 4.0M 326M
-/+ buffers/cache: 125M 364M
Swap: 0B 0B 0B
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