Refresh control value

As a background task, OnSNMP periodically updates the contents of MIB tables that it derives from catalog information. The refresh control value determines the amount of time that OnSNMP spends refreshing these MIB tables versus the amount of time that it spends responding to queries from the master agent.

Specify the refresh control value with the runsnmp.ksh -s -r command-line option or the onsrvapd -r command-line option. The following table lists the MIB tables that this value affects.

Table 1. MIB tables affected by options
Database-related MIB tables	Table-related MIB tables
rdbmsDbInfoTable rdbmsDbTable rdbmsRelTable onBarTable onDatabaseTable	onActiveTableTable onFragmentTable onTableTable

The following table describes the possible values for the refresh control value.

Table 2. Possible values for refresh control value
Value	Description
`a` or all	Refresh the database-related and table-related tables periodically.
`n` or none	Do not fill or refresh any of the catalog-based tables. Instead, leave the catalog-based tables empty.
`o` or once	Fill the database-related and table-related tables once at startup.

The following table lists the default refresh control value for each operating system.

Table 3. Default refresh control values
Operating system	Default refresh control value
UNIX	once
Windows	all

The best value to use depends on the environment and how you use OnSNMP. If the list of tables and databases changes frequently, it is probably best to use a value of all to make sure that the MIB tables are accurate. If the environment includes many tables and databases, it is probably best to use a value of once to let OnSNMP respond to queries.