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Appendix C. Probes 243
•
Consistent Gets — The number of accesses made to the block buffer to retrieve data in
a consistent mode.
•
Physical Reads — The cumulative number of blocks read from disk.
•
Buffer Cache Hit Ratio — The rate at which the database goes to the buffer instead of
the hard disk to retrieve data. A low ratio suggests more RAM should be added to the
system.
Field Value
Oracle SID*
Oracle Username*
Oracle Password*
Oracle Port
1521
Timeout* 30
Warning Minimum Buffer Cache Hit Ratio
Critical Minimum Buffer Cache Hit Ratio
Table C-51. Oracle::Buffer Cache settings
C.9.5. Oracle::Client Connectivity
The Oracle::Client Connectivity probe determines if the database is up and capable of
receiving connections from the monitored system. This probe opens an
rhnmd
connection
to the system and issues a
sqlplus connect
command on the monitored system.
The Expected DB name parameter is the expected value of
V$DATABASE.NAME
. This
value is case-insensitive. A CRITICAL status is returned if this value is not found.
Requirements — The Red Hat Network Monitoring Daemon (
rhnmd
) must be running on
the monitored system to execute this probe. For this probe to run, the nocpulse user
must be granted read access to your log files.
Field Value
Oracle Hostname or IP address*
Oracle SID*
Oracle Username*
Oracle Password*