Installation and Upgrade > Upgrading to the Latest Version of PTC FlexPLM > Upgrade Steps for PTC FlexPLM > Preparing to Upgrade > Setting Properties to Optimize Cache Sizes
  
Setting Properties to Optimize Cache Sizes
1. Ensure that the appropriate WinDU has been run on the source system.
2. Ensure that output has been captured so that the proper cache sizes can be configured on the target system prior to starting the upgrade.
3. Open the site.xconf file and add the following properties (obtain values from WinDU output):
Action
Property
Property to increase TypeDefinitionCache2
<Property name="wt.cache.size.TypeDefinitionCache2" overridable="true" targetFile="codebase/wt.properties" value="<Greater than or equal to the number of non-deleted rows in LWCTypeDefinition>"/>
Property to increase ConstraintRuleCache
<Property name="wt.cache.size. ConstraintRuleCache" overridable="true" targetFile="codebase/wt.properties" value="<Equal to the number of rows in LWCConstraintRuleDefinition>"/>
Property to increase EnumerationDefinitionCache
<Property name="wt.cache.size. EnumerationDefinitionCache" overridable="true" targetFile="codebase/wt.properties" value="<Greater than or equal to the number of rows in LWCMasterEnumerationDefinition>"/>
Property to increase OrganizerCache
<Property name="wt.cache.size. OrganizerCache" overridable="true" targetFile="codebase/wt.properties" value="<Equal to the number of rows in LWCOrganizer>"/>
Property to increase PropertyDefinitionCache
<Property name="wt.cache.size. PropertyDefinitionCache" overridable="true" targetFile="codebase/wt.properties" value="<Equal to the number of rows in LWCPropertyDefinition>"/>