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# Server --> Logging --> HTTP

Tasks Related Topics Attributes

## Overview

The Server—>Logging—>HTTP tab configures HTTP logging for the server. If you enable HTTP logging, the server saves HTTP requests in a separate log file; it does not store HTTP requests in the server log file or the domain log file.

You can also specify the name of the log file that stores HTTP requests and the longevity and format of the data in the file.

Note: If you set up HTTP logging for a virtual host, all HTTP requests for the virtual host are saved in a separate log file.

## Tasks

Enabling and Configuring an HTTP Log

## Related Topics

For more information about log files, refer to Setting Up HTTP Access Logs. This topic includes information about using the extended format in HTTP logs.

For information about VirtualHosts, refer to "Configuring Virtual Hosting" under Configuring WebLogic Server Web Components.

## Attributes

Table 281-1

Attribute Label | Description | Value Constraints
--- | --- | ---
Enable HTTP Logging | Enables logging of HTTP requests. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LoggingEnabled` | Default: true Valid values: true false Configurable: yes
HTTP Log File Name | The HTTP request log file The name of the file that stores HTTP requests. If the pathname is not absolute, the path is assumed to be relative to the root directory of the machine on which the server is running. This value is relevant only if HTTP logging is enabled. To include a time or date stamp in the file name when the log file is rotated, add `java.text.SimpleDateFormat` variables. Surround each variable with percentage (`%`) characters. For example, `access_%yyyy%_%MM%_%dd%_%hh%_%mm%.log` If you do not include a time and date stamp, the rotated log files are numbered in order of creation `filename` `nnnn`, where `filename` is the name configured for the log file. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LogFileName` | Default: access.log Configurable: yes
Format | Specifies the format of the HTTP log file. Both formats are defined by the W3C. With the extended log format, you use server directives in the log file to customize the information that the server records. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LogFileFormat` | Default: "common" Valid values: "common" "extended" Configurable: yes Dynamic: yes
Log Buffer Size | The maximum size (in kilobytes) of the buffer that stores HTTP requests. When the buffer reaches this size, the server writes the data to the HTTP log file. Use the `LogFileFlushSecs` property to determine the frequency with which the server checks the size of the buffer. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LogFileBufferKBytes` | Units: kilobytes Minimum: 0 Maximum: 1024 Default: 8 Configurable: yes
Rotation Type | Criteria for moving old HTTP requests to a separate log file: `size`. When the log file reaches the size that you specify in `MaxLogFileSizeKBytes`, the server renames the file as LogFileName.n. `date`. At each time interval that you specify in `LogRotationPeriodMin`, the server renames the file as LogFileName.n. After the server renames a file, subsequent messages accumulate in a new file with the name that you specified in `LogFileName`. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LogRotationType` | Default: "size" Valid values: "size" "date" Configurable: yes
Maximum Log File Size | The file size (1 - 65535 kilobytes) that triggers the server to move log messages to a separate file. After the log file reaches the specified size, the next time the server checks the file size, it will rename the current log file as `FileName.n` and create a new one to store subsequent messages. `0` causes the file to grow indefinitely. This property is relevant only if you choose to rotate files by `size`. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `MaxLogFileSizeKBytes` | Units: kilobytes Minimum: 0 Default: 5000 Configurable: yes
Rotation Period | The interval (in minutes) at which the server saves old HTTP requests to another log file. This value is relevant only if you use the `date`-based rotation type. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LogRotationPeriodMins` | Units: minutes Minimum: 1 Maximum: 2147483647 Default: 1440 Configurable: yes
Rotation Time | Determines the start time for a time-based rotation sequence. At the time that this value specifies, the server renames the log file. Thereafter, the server renames the log file at an interval that you specify in `LogRotationPeriodMins`. Use the following `java.text.SimpleDateFormat` format to specify a date and time: `MM-dd-yyyy-k:mm:ss`. For information about this format, refer to the J2EE Javadoc. If the time that you specify is already past, the server calculates the initial rotation time based on the rotation start time and the rotation period. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LogRotationTimeBegin` | Configurable: yes
Limit Number Of Retained Log Files | Specifies whether the number of files that this WebLogic Server creates to store old messages should be limited. After the server reaches this limit, it overwrites the oldest file. MBean: `weblogic.management. configuration.LogMBean` Attribute: `NumberOfFilesLimited` | Default: false
Log Files to Retain | The maximum number of log files that this WebLogic Server creates when it rotates the log. (This field is relevant only if you check the Limit Number Of Retained Log Files box.) MBean: `weblogic.management. configuration.LogMBean` Attribute: `FileCount` | Default: 7
Flush Every | The interval (in seconds) at which the server checks the size of the buffer that stores HTTP requests. When the buffer exceeds the size that is specified in the `LogFileBufferKBytes` property, the server writes the data in the buffer to the HTTP request log file. MBean: `weblogic.management. configuration. WebServerMBean` Attribute: `LogFileFlushSecs` | Units: seconds Minimum: 1 Maximum: 360 Default: 60 Configurable: yes