1 title: ORACLE ASM Disk Groups
2 agents: linux, solaris, hpux
7 This check measures the usage of ASM Disk Groups. The usage
8 is checked against a warning and a critical level, which
9 can be specified in numerous ways.
11 {Requirements:} The {mk_oracle} is needed on the monitored machines.
12 See details for mk_oracle at manpage of oracle_instance.
13 All Failure Groups need the same size. Otherwise the calculation of
14 total and used space is wrong. Disk Groups with Voting require 3 for
15 NORMAL and 5 for HIGH Redundancy!
17 {Trends:} This checks supports Disk Group {trends}. This means that the
18 check is able to compute the change of the used space over the time
19 and can make a forecast into the future. It can estimate the time when
20 the Disk Group will be full.
22 In a default configuration the check will compute the trend based on the
23 data of the last 24 hours using a logarithmic average that gives more recent
24 data a higher weight. Also data beyond the 24 hours will to some small degree be
25 reflected in the computation. The advantage of this algorithm is a more
26 precise prediction and a simpler implementation, which does not need any
27 access to any RRDs or similar storage.
29 Please note that when a Disk Group is started to be monitored,
30 the trend of the past is unknown and is assumed to be {zero}.
31 It will take at least one trend range of time until the trend
32 approximately reflects the reality.
35 The name of the disk group as delivered by the agent without the {/} at the
38 See also check manpage for {df}. All configurations are usable for ORACLE ASM
42 Creates one check for every Disk Group in the agent's output.