WebSphere WebSphere Application Server Version 6.1.x Feature Pack for Web Services Operating Systems: AIX, HP-UX, i5/OS, Linux, Solaris, Windows, z/OS

Files in a file store

Three different types of files make up a file store. Learn where to find them and how to recognize them.

File store mechanisms splits data storage into three levels: the log file, permanent store file and temporary store files

The log file
contains information about currently active transactions, and data which has not yet been written to a store file. The log file has a fixed size and does not expand as it is used
Permanent store file
contains permanent data which survives restart of the messaging engine, such as persistent messages and information about the storage and transmission of persistent messages
Temporary store file
contains temporary data which does not survive restart of the messaging engine, such as nonpersistent messages which have been spilled to the file store to release memory from the JVM heap. The temporary store file is emptied when the messaging engine starts

The administrator can configure where thefile store’s files are placed. By default, the file store uses a subdirectory beneath ${USER_INSTALL_ROOT}/filestores. The file store directory contains three files, logDirectory, permanentstoreDirectory and temporaryStoreDirectory.


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Timestamp icon Last updated: 27 November 2008
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