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Comment surveiller l'utilisation de l'espace sur les groupes de disques ASM

Hier soir, la zone de récupération de l'une de nos appliances de base de données Oracle s'est remplie. Cela a été signalé dans l'un des journaux d'alertes de la base de données, et nous avons pu vider de l'espace avant le prochain changement de journal, moment auquel la production aurait été interrompue.

Il aurait certainement été agréable d'avoir un peu plus d'avertissement, comme lorsque le groupe de disques était plein à 70%.

Quelles options avons-nous pour surveiller l'utilisation du disque dans ASM?

oracleoracle-asmoracle-database-appliance
7
Roy

Utilisez simplement asmcmd. Par exemple:

[Oracle@oel61 ~]$ . oraenv
Oracle_SID = [+ASM] ? +ASM
The Oracle base remains unchanged with value /u01/app/Oracle
[Oracle@oel61 ~]$ asmcmd lsdg
State    Type    Rebal  Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Voting_files  Name
MOUNTED  EXTERN  N         512   4096  1048576     30708    28479                0           28479              0             N  DATA/
[Oracle@oel61 ~]$

Ou obtenez les informations directement à partir de l'instance ASM Oracle:

[Oracle@oel61 ~]$ . oraenv
Oracle_SID = [+ASM] ? +ASM
The Oracle base remains unchanged with value /u01/app/Oracle
[Oracle@oel61 ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.2.0 Production on Thu Mar 7 10:44:44 2013

Copyright (c) 1982, 2010, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Automatic Storage Management option

SQL> SELECT name, free_mb, total_mb, free_mb/total_mb*100 as percentage 
     FROM v$asm_diskgroup;

NAME                  FREE_MB   TOTAL_MB PERCENTAGE
------------------------------ ---------- ---------- ----------
DATA                    28479      30708 92.7413052

SQL>
16
Philᵀᴹ

Essaye ça...

col gname form a10
col dbname form a10
col file_type form a14

SELECT
    gname,
    dbname,
    file_type,
    round(SUM(space)/1024/1024) mb,
    round(SUM(space)/1024/1024/1024) gb,
    COUNT(*) "#FILES"
FROM
    (
        SELECT
            gname,
            regexp_substr(full_alias_path, '[[:alnum:]_]*',1,4) dbname,
            file_type,
            space,
            aname,
            system_created,
            alias_directory
        FROM
            (
                SELECT
                    concat('+'||gname, sys_connect_by_path(aname, '/')) full_alias_path,
                    system_created,
                    alias_directory,
                    file_type,
                    space,
                    level,
                    gname,
                    aname
                FROM
                    (
                        SELECT
                            b.name            gname,
                            a.parent_index    pindex,
                            a.name            aname,
                            a.reference_index rindex ,
                            a.system_created,
                            a.alias_directory,
                            c.type file_type,
                            c.space
                        FROM
                            v$asm_alias a,
                            v$asm_diskgroup b,
                            v$asm_file c
                        WHERE
                            a.group_number = b.group_number
                        AND a.group_number = c.group_number(+)
                        AND a.file_number = c.file_number(+)
                        AND a.file_incarnation = c.incarnation(+) ) START WITH (mod(pindex, power(2, 24))) = 0
                AND rindex IN
                    (
                        SELECT
                            a.reference_index
                        FROM
                            v$asm_alias a,
                            v$asm_diskgroup b
                        WHERE
                            a.group_number = b.group_number
                        AND (
                                mod(a.parent_index, power(2, 24))) = 0
                            and a.name like '&&db_name'
                    ) CONNECT BY prior rindex = pindex )
        WHERE
            NOT file_type IS NULL
            and system_created = 'Y' )
WHERE
    dbname like '&db_name'
GROUP BY
    gname,
    dbname,
    file_type
ORDER BY
    gname,
    dbname,
    file_type
/
1
Raja