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Standby Alert Log (StandbyAlertLog)
The parameter reports the following values:
Value | Description |
|---|---|
0 | The data in the Oracle standby alert log file was successfully read and contents do not match the user defined filters. |
1 | The Oracle standby alert log file is not accessible. |
2 | The alreader utility failed to start or failed to register the Oracle standby alert log file. |
3 | The data Oracle standby alert log file was successfully read and it contains matches to the user defined filters. |
The annotation in the StandbyAlertLog parameter shows the results for values 1, 2, and 3.
The first time the alreader utility runs after discovery, it initializes the parameter value by setting it to zero. Also, the parameter does not report any value if the alert log file is empty or does not exist.
BMC PATROL properties
Attribute | Default value |
|---|---|
Application class | ORACLE_STANDBY_DG_INSTANCE |
Command type | not applicable |
Platform | All |
Icon style | StopLight |
Unit | None |
Border range | 0-3 |
Alarm1 range | 1-2 warn |
Alarm2 range | 3-3 alarm |
Scheduling(poll time) | 10 min |
Active at installation | Yes |
Parameter type | Standard |
Value set by | Parameter collects own value |
Annotation | Complete text for all entries that contain ORA-XXXX errors or user defined text. |
External File | Extract alert log file location based on the following SQL query: select * from v$diag_info where NAME in ('Diag Trace') |
BMC ProactiveNet Performance Management properties
Property | Default value |
|---|---|
Monitor type | Oracle Database Standby DG Instance |
Key Performance Indicator | Yes |
Monitor for abnormalities | Yes |
Graph by default | Yes |
Availability | No |
Response time | No |
Normal distribution | Yes |
Statistical | Yes |
alreader
The alreader (alreader.exe on Windows) is a utility for scanning Oracle Alert log files. Oracle alert log files are used by Oracle to record change events within the Oracle system. The KM uses these files as source of data for monitoring. This utility is a tool used for data collection. The utility can scan one or more alert log files according to your needs. Every change in the log file is recorded by the alreader utility and the new changes (data lines) are sent to the KM.
In remote monitoring, the alreader utility is deployed locally on the host where the Oracle database is installed. The utility sends the new changes (data lines) to the remote PATROL Agent located on a different host over SSH.
After the utility initializes the StandbyAlertLog parameter, the parameter scans 1 MB of data in the alert log every 600 seconds (10 minutes) for new entries