What is an Application Log?
The Application Log is a tool for collecting messages, saving, reading and deleting logs in
the database and displaying logs.
Use of Application Log:
You can analyze the logs and their messages, and get more information about them, in the
Display log dialog box.
The log display is used in many SAP system applications, and has a slightly different format
depending on the number of messages and the data structure.
Features of Application Log:
In applications with a (potentially) large number of messages, the display is divided into
areas. A navigation tree provides an overview and allows navigation among the messages, and
either all or a selection of messages are displayed in a list (ABAP List Viewer). The
navigation tree can be either above or to the left of the list. Applications with little
data have no navigation tree.
Function module used to create Application Log
BAL_LOG_CREATE –> Create log with header data
BAL_LOG_MSG_ADD –> Put message in log
BAL_DB_SAVE –> Save logs in the database
SLG0: Creation of Object and Sub object
SLG1: Display Application Logs
Step by Step procedure for Creation of Application Log:
Step 1: Open the transaction code SLG0. This transaction
code is used to create Object and Sub object.
Step 2: Check for the Object which is already in created and in use by your
company/team/project. Else, Create a New Entry starting with Z or Y.
Step 3: After creating (if not exist) the object, select the object and go to its
Step 4: If corresponding sub-objects doesn¡¦t exists, create a sub object.
Step 5: Now the ¡¥Object¡¦ and ¡¥Sub Object¡¦
are used in creation of Application Log.
Step 6: Three function modules are basically used to create the application log
Step 7: ‘BAL_LOG_CREATE’ „³ this function module creates the log handle
Step 8: ‘BAL_LOG_MSG_ADD’ „³ this function module is used to populate the messages
into the created application log. If we have more than one message to be passed into the
same log, then we can loop at the messages and pass them through this function module.
Step 9: ‘BAL_DB_SAVE’ „³ this function module is used to save the log. The
creation of log and addition of messages into the log are performed in the first two
function modules mentioned. This function module saves the log so that the user can view the
log in SAP.Transaction Code the view the log: SLG1.
How to view Application Logs?
1. Choose the transaction SLG1. You go to the Analyze Application Log dialog box.
2. Enter Object, Subobject and Ext. number.
3. Choose a Time restriction.
4. Specify Log caused by.
5. Choose the Log class and Log creation.
6. Choose Execute.
You go to the Display log dialog box.
Sample Program in SAP: