Apache Tomcat Configuration Reference

System Properties

The follow sections list the system properties that may be set to modify the default Tomcat behaviour.

Property	Description
org.apache.jasper.compiler. Parser.STRICT_QUOTE_ESCAPING	If false the requirements for escpaing quotes in JSP attributes will be relaxed so that a missing required quote will not cause an error. If not specified, the specification compliant default of true will be used.
org.apache.jasper.runtime. BodyContentImpl.LIMIT_BUFFER	If true, any tag buffer that expands beyond org.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE will be destroyed and a new buffer created of the default size. If not specified, the default value of false will be used.
org.apache.jasper.runtime. JspFactoryImpl.USE_POOL	If true, a ThreadLocal PageContext pool will be used. If not specified, the default value of true will be used.

Property	Description
org.apache.catalina.connector. CoyoteAdapter.ALLOW_BACKSLASH	If this is true the '\' character will be permitted as a path delimiter. If not specified, the default value of false will be used.
org.apache.tomcat.util.buf. UDecoder.ALLOW_ENCODED_SLASH	If this is true '%2F' and '%5C' will be permitted as path delimiters. If not specified, the default value of false will be used.
org.apache.coyote. USE_CUSTOM_STATUS_MSG_IN_HEADER	If this is true custom HTTP status messages will be used within HTTP headers. Users must ensure that any such message is ISO-8859-1 encoded, particularly if user provided input is included in the message, to prevent a possible XSS vulnerability. If not specified the default value of false will be used.

Property	Description
org.apache.catalina. STRICT_SERVLET_COMPLIANCE	If this is true the following actions will occur: any wrapped request or response object passed to an application dispatcher will be checked to ensure that it has wrapped the original request or response. (SRV.8.2 / SRV.14.2.5.1) when updating the access count for the session, the update will be synchronized.

Property	Description
catalina.useNaming	If this is false it will override the useNaming attribute for all Context elements.
jvmRoute	Provides a default value for the jvmRoute attribute of the Engine element. It does not override the a value configured on the Engine element.
org.apache.catalina.loader. WebappClassLoader.ENABLE_CLEAR_REFERENCES	If true, Tomcat attempts to null out any static or final fields from loaded classes when a web application is stopped as a work around for apparent garbage collection bugs and application coding errors. There have been some issues reported with log4j when this option is true. Applications without memory leaks using recent JVMs should operate correctly with this option set to false. If not specified, the default value of true will be used.
catalina.config	The URL for the catalina.properties configuration file.
tomcat.util.buf.StringCache.byte.enabled	If true, the String cache is enabled for ByteChunk. If not specified, the default value of false will be used.
tomcat.util.buf.StringCache.char.enabled	If true, the String cache is enabled for CharChunk. If not specified, the default value of false will be used.
tomcat.util.buf.StringCache.trainThreshold	The number of times toString() must be called before the cache is activated. If not specified, the default value of 20000 will be used.
tomcat.util.buf.StringCache.cacheSize	The size of the String cache. If not specified, the default value of 200 will be used.
tomcat.util.buf.StringCache.maxStringSize	The maximum length of String that will be cached. If not specified, the default value of 128 will be used.