1.2 Mirroring Controller Message Format

This section explains the format of messages output by the Mirroring Controller.

Mirroring Controller messages are output to the following locations:

Output format

programName[processId]: msgType: msgText (msgNumber)

For programName, use the value of the syslog_ident parameter or event_source parameter defined in the serverIdentifier.conf file.

The message types output by Mirroring Controller, their severity, and their corresponding value in the system log are shown in the table below.

Table 1.1 Message type, severity, and corresponding value in the system log
Message type	Severity	Meaning	System log
INFO	Information	Provides information not categorized as LOG or NOTICE.	INFO
LOG	Information	Provides information recognized as a particularly important event in tracing the operation history. (Example: Automatic switch is complete)	INFO
NOTICE	Notice	Outputs information that takes into account the user instructions within the program in response to an executed or automatically executed process.	NOTICE
WARNING	Warning	Provides a warning, for example it will soon be impossible to maintain multiplexing capabilities.	WARNING
ERROR	Error	Reports that an error other than FATAL or PANIC has occurred.	ERROR
FATAL		Reports that an error has been detected requiring system recovery in one of the multiplexed database systems. It also reports the content and cause of the error.	CRIT
PANIC		Reports that an error has been detected requiring immediate system recovery in all multiplexed database systems. It also reports the content and cause of the error.	ALERT

The message types output by Mirroring Controller, their severity, and their corresponding value in the event log are shown in the table below.

Table 1.2 Message type, severity, and corresponding value in the event log
Message type	Severity	Meaning	Event log
INFO	Information	Provides information not categorized as LOG or NOTICE.	INFORMATION
LOG	Information	Provides information recognized as a particularly important event in tracing the operation history. (Example: Automatic switch is complete)
NOTICE	Notice	Outputs information that takes into account the user instructions within the program in response to an executed or automatically executed process.
WARNING	Warning	Provides a warning, for example it will soon be impossible to maintain multiplexing capabilities.	WARNING
ERROR	Error	Reports that an error other than FATAL or PANIC has occurred.	ERROR
FATAL		Reports that an error has been detected requiring system recovery in one of the multiplexed database systems. It also reports the content and cause of the error.
PANIC		Reports that an error has been detected requiring immediate system recovery in all multiplexed database systems. It also reports the content and cause of the error.

The message severity has the following meanings:

Information
Informational status. A message that was reported by the system is displayed. No action is required.
Notice
Informational status, but a message that should be noted is displayed. If necessary, take the actions described in the "Action" section of the message.
Warning
No error has occurred, but the user is requested to check, and take action. Take the actions described in the "Action" section of the message.
Error
An error has occurred. Take the actions described in the "Action" section of the message.