Logging in ADF Application
For ADF Logging Explained Chapter 1, click here. This post describes Logging Levels.
Why there is need to learn Logging levels ?
When adding logger to Oracle Diagnostic Logging, there is option to define the loggingLevel for that Logger. Switching the logging Level in Oracle Diagnostic Logging for our custom Logger, you can control the level of details logged. Too much of logging can also cause performance issue. Decision of logging an information is taken based on the intValue comparision ( more details explained in later section ).
A logging Level is defined using name,intValue and resourceBundleName. The resource bundle name to be used in localizing the level name so for now we will focus on name and intValue. There are some predefined Levels mentioned in java.util.logging.Level class.
| LOG LEVEL | NAME | INT VALUE |
| OFF | OFF | INTEGER.MAX_VALUE |
| SEVERE | SEVERE | 1000 |
| WARNING | WARNING | 900 |
| INFO | INFO | 800 |
| CONFIG | CONFIG | 700 |
| FINE | FINE | 500 |
| FINER | FINER | 400 |
| FINEST | FINEST | 300 |
| ALL | ALL | Integer.MIN_VALUE |
Other logging Level types are custom levels defined using java.util.logging.Level with new name and API.
Logging Levels defined in ADFLogger :
| LOG LEVEL | NAME | INT VALUE |
| INTERNAL_ERROR | INTERNAL_ERROR | 1100 |
| ERROR | SEVERE | 1000 |
| WARNING | WARNING | 900 |
| NOTIFICATION | INFO | 800 |
| TRACE | FINE | 500 |
Other Logging Levels :
A) ODL Log Level
B) JAVA Log Level
C) Weblogic Server
Here is detailed list of different logging levels and there comparision :
| ODL | WebLogic Server | Java |
| OFF | OFF | 2147483647 - OFF |
| INCIDENT_ERROR:1 | (EMERGENCY) | 1100 |
| INCIDENT_ERROR:4 | EMERGENCY | 1090 |
| INCIDENT_ERROR:14 | ALERT | 1060 |
| INCIDENT_ERROR:24 | CRITICAL | 1030 |
| ERROR:1 | (ERROR) | 1000 - SEVERE |
| ERROR:7 | ERROR | 980 |
| WARNING:1 | WARNING | 900 - WARNING |
| WARNING:7 | NOTICE | 880 |
| NOTIFICATION:1 | INFO | 800 - INFO |
| NOTIFICATION:16 | (DEBUG) | 700 - CONFIG |
| TRACE:1 | (DEBUG) | 500 - FINE |
| TRACE:1 | DEBUG | 495 |
| TRACE:16 | (TRACE) | 400 - FINER |
| TRACE:32 | (TRACE) | 300 - FINEST |
| TRACE:32 | TRACE | 295 |
Now you know about different available logging Level Types and their values. It is very much clear from the level names ALL and OFF that more and more detailed logging will happen with decrease in logging level int Value.
