Server --> Protocols --> jCOM

Server --> Protocols --> jCOM

You must be in the Admin security role to see the Security, CompatibilitySecurity, and Services - > jCOM nodes in the navigation tree. Related Topics Attributes

Overview

Use this tab to enable and disable jCOM and configure various aspects of its behavior, including:
The NT Authentication Host address
Whether it runs in native or non-native mode
Whether the server logs memory usage
Whether prefetch enumeration is enabled
Whether jCOM is initialized in native mode

Note: You must be in the Admin security role to see the Security, CompatibilitySecurity, and Services - > jCOM nodes in the navigation tree.

Tasks

Enabling and Configuring jCOM

Related Topics

Programming WebLogic jCOM

Attributes

Attribute Label

Description

Value Constraints
Enable COM Whether or not COM support is enabled on the plaintext port. (COM is not supported on the SSL port.)MBean: weblogic.management.
configuration.ServerMBeanAttribute: COMEnabled Default: falseValid values:
true

false

NT Authentication Host The address of the primary domain controller to be used for authenticating clients. If this property is not set, COM clients will not be authenticated.MBean: weblogic.management.
configuration.COMMBeanAttribute: NTAuthHost

Enable Native Mode Use native DLLs to allow Java objects to interact with COM Objects. Only supported on Windows.MBean: weblogic.management.
configuration.COMMBeanAttribute: NativeModeEnabled Default: falseValid values:
true

false

Enable Memory Logging Enables logging of memory usageMBean: weblogic.management.
configuration.COMMBeanAttribute: MemoryLoggingEnabled Default: falseValid values:
true

false

Prefetch Enumeration Some COM methods return a COM VariantEnumeration type. The java2com tool automatically converts the returned type into a java.lang.Enumeration. This is not a perfect match since COM enumerations have no equivalent to the hasMoreElements() call. The client must continue to call nextElement until a NoSuchElementException occurs. Setting this property will cause jCOM to prefetch the next element in behind the scenes and return the correct value when hasMoreElements is called.MBean: weblogic.management.
configuration.COMMBeanAttribute: PrefetchEnums Valid values:
true

false

Apartment Threaded Controls the flag that is used to initialize COM in native mode. By default, jCOM initializes COM using the COINIT_MULTITHREADED_FLAG. If the server logs a Class Not Registered Message when using native mode, try setting this property. (COINIT_APARTMENTTHREADED)MBean: weblogic.management.
configuration.COMMBeanAttribute: ApartmentThreaded Default: falseValid values:
true

false

Attribute Label	Description	Value Constraints
Enable COM	Whether or not COM support is enabled on the plaintext port. (COM is not supported on the SSL port.)MBean: weblogic.management. configuration.ServerMBeanAttribute: COMEnabled	Default: falseValid values: true false
NT Authentication Host	The address of the primary domain controller to be used for authenticating clients. If this property is not set, COM clients will not be authenticated.MBean: weblogic.management. configuration.COMMBeanAttribute: NTAuthHost
Enable Native Mode	Use native DLLs to allow Java objects to interact with COM Objects. Only supported on Windows.MBean: weblogic.management. configuration.COMMBeanAttribute: NativeModeEnabled	Default: falseValid values: true false
Enable Memory Logging	Enables logging of memory usageMBean: weblogic.management. configuration.COMMBeanAttribute: MemoryLoggingEnabled	Default: falseValid values: true false
Prefetch Enumeration	Some COM methods return a COM VariantEnumeration type. The java2com tool automatically converts the returned type into a java.lang.Enumeration. This is not a perfect match since COM enumerations have no equivalent to the hasMoreElements() call. The client must continue to call nextElement until a NoSuchElementException occurs. Setting this property will cause jCOM to prefetch the next element in behind the scenes and return the correct value when hasMoreElements is called.MBean: weblogic.management. configuration.COMMBeanAttribute: PrefetchEnums	Valid values: true false
Apartment Threaded	Controls the flag that is used to initialize COM in native mode. By default, jCOM initializes COM using the COINIT_MULTITHREADED_FLAG. If the server logs a Class Not Registered Message when using native mode, try setting this property. (COINIT_APARTMENTTHREADED)MBean: weblogic.management. configuration.COMMBeanAttribute: ApartmentThreaded	Default: falseValid values: true false