If you are running an Oracle Forms and Reports 12c (12.2.1.+) environment over quite some time, you might discover that under the /tmp directory are a quite huge number of files named component_event.xlf* and pki_data*.tmp are generated and filling up your /tmp space. The pki_data*.tmp files are usually 0 Bytes, but the component_event.xlf* files are between some Bytes up to some 100 Bytes. Over some time, these files are really fill up your /tmp.
These files are generated by the Oracle Platform Security for Java component and they are holding temporarily cache data. In order to get rid of the component_event.xlf* files, you will just to have modify two configuration files of your WebLogic Domain. In the configuration file $DOMAIN_HOME/config/fmwconfig/jps-config.xml find the following line and comment this line out. Read the complete article here.
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