1 title: Check Checkpoint and user managed Backup state of datafiles
2 agents: linux, aix, hp/ux, Solaris
7 This check monitors the Checkpoint and the online backup state
8 on every datafile of the Database.
9 The Checkpoint is normaly needed for Standby Databases as the apply
10 of an archived redolog will move the checkpoint of the database. This
11 is a usual way to monitor the apply of archived redologs on a Physical
12 Standby Database without Data Guard. This is normaly needed for
13 Standard Edition Databases. There is an important difference between
14 Primary and Standby Database. Primary will only create WARNINGs, when
15 the level of levels is exceeded. A value for CRITICAL is only usable
16 when the Database is in Physical Standby Mode.
17 The check for 'missing files' detects missing files in the control file
18 of the database. The Check results in a CRIT state when more the 0
19 files are missing. This is possible in physical stanbdy Environments
20 after an error while creating a new datafile.
22 The 2nd function is the monitoring of datafiles in manual backup mode.
23 This is important for database which are backed up with 'alter database
24 begin/end backup;' - RMAN didn't use this function and it is not needed
25 for that backup type. If an end backup is missing and you restart the
26 database you'll unable to open the database.
28 To prevent such situations, the state of the backup mode could be
29 monitored. The rule describes the maximum time for an active backup
30 mode for a datafile until a WARN or CRIT is generated.
32 If the last checkpoint time is in the future the check generates a WARN
33 and is displaying an information to check the time on the host system.
35 {Important Information}
36 There is no checkpoint created if a database is in backup mode. It
37 is expected, that the checkpoint time could also reach a configured
38 limit when a backup is running! This is not the case for Backups with
41 This check needs the Check_MK {mk_oracle}-plugin installed in
42 the agent. Please refer to the online documentation
43 for how to install that plugin.
46 The SID of the database in uppercase (as appearing in the process
47 name of the pmon_... process).