File based Coherence configuration for Oracle SOA Suite

Oracle SOA Suite comes with embedded Oracle Coherence - data grid software used to improve communication in the cluster. Customer is not intended to change configured internal caches, and cannot use this Coherence software for his own purposes. On the other hand, customer may need to update cluster layer technical parameters to adjust them to the environment. One of recommended configuration steps is switching from default multicast, UDP based, cluster discovery and communication protocol, to TCP based, unicast mode. Enabling Well Known Addresses (WKA) is a technical activity that does the switch. This document describes how to do this with receipt of moving configuration to files. 

Linux memory management configuration

Linux by default uses up to half of available memory for disk caches, uses swap, and 4k pages to manage memory. In the case of in-memory processing system, the data handling is truly bound to physical RAM, and all typical memory management is not necessary (at least to some extend). 

WebLogic class loader - analysis and configuration options

Class loader mechanics in WebLogic server may be difficult to understand. This document presents various configuration options available in WebLogic showing its unexpected but documented, and expected but undocumented behaviors. JDeveloper project is attached to this work.