10.4.5 Suppressing message output to syslog

HADB outputs various types of information to syslog, including error information, transaction information, and system file information. These messages provide important information that indicates HADB's operational status.

However, depending on the operating environment, a large number of messages might be output. If the size of syslog continues to increase because of the messages output by HADB, the disk might run out of free space. You can prevent HADB from causing the disk to run out of free space by suppressing the output of unnecessary messages to syslog.

To suppress messages from being output to syslog, specify a message output level in the environment variable ADBSYSLOGLV. For details about environment variable ADBSYSLOGLV, see 8.4 Setting environment variables.

The following table shows message output levels and describes the messages that are output to syslog.

Table 10‒8: Message output levels and description of messages that are output to syslog
Output level	Description of output message
`0`	No messages are output to syslog.
`1`	Only the following messages are output to syslog: Warning messages indicating that an abnormality occurred in the message log file Error messages indicating a fatal error such as a process breakdown Response messages that require a user response
`2`	Messages output for output level `1` plus the following messages are output to syslog: Error messages indicating an HADB error Information messages indicating HADB startup, termination, and other major events
`3`	Messages output for output levels `1` to `2` plus the following messages are output to syslog: Error messages indicating an error at the job level
`4`	Messages output for output levels `1` to `3` plus the following messages are output to syslog: Warning messages that do not hinder continued operation but report a status (error) to the user
`5`	Messages output for output levels `1` to `4` plus the following messages are output to syslog: Information messages indicating thread startup, connection establishment and other minor events
`6`	All messages that are to be output to syslog are output.

For details about the output level of each message, see List of message output locations in the manual HADB Messages.

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