@@header

/*
*
*  Author     : Vishal Gupta
*  Purpose    : Display ASM diskgroup usage by directory
*  Parameters : 1 - DiskGroup           (% - wildchar, \ - escape char, default is '%')
*               2 - Directory           (% - wildchar, \ - escape char, default is '%') 
*
*  Revision History:
*  ===================
*  Date       Author        Description
*  ---------  ------------  -----------------------------------------
*  17-Apr-12  Vishal Gupta  First Draft
*
*
*/



/************************************
*  INPUT PARAMETERS
************************************/
UNDEFINE DISKGROUP_NAME
UNDEFINE DISK_NAME

DEFINE DISKGROUP_NAME="&&1"  
DEFINE DIRECTORY="&&2"  

set term off
COLUMN  _DISKGROUP_NAME     NEW_VALUE  DISKGROUP_NAME        NOPRINT
COLUMN  _DIRECTORY          NEW_VALUE  DIRECTORY             NOPRINT

SELECT UPPER(DECODE('&&DISKGROUP_NAME','','%','&&DISKGROUP_NAME'))   "_DISKGROUP_NAME"
     , UPPER(DECODE('&&DIRECTORY','','%','&&DIRECTORY'))             "_DIRECTORY" 
FROM DUAL;
set term on

PROMPT 
PROMPT **********************************************************************
PROMPT *     A S M    D I S K G R O U P    S P A C E   U S A G E            *
PROMPT *                  (By FileType and Directory)                       *
PROMPT * 
PROMPT * Input Parameters 
PROMPT *  - DiskGroup Name = '&&DISKGROUP_NAME'
PROMPT *  - Directory      = '&&DIRECTORY'
PROMPT **********************************************************************

COLUMN DiskGroup              HEADING "DiskGroup"                FORMAT a20
COLUMN file_type              HEADING "FileType"                 FORMAT a20
COLUMN Mirrored_UsedSize      HEADING "Mirrored|UsedSize|(GB)"   FORMAT 999,999,999
COLUMN UnMirrored_UsedSize    HEADING "UnMirrored|UsedSize|(GB)" FORMAT 999,999,999
COLUMN parent_directory       HEADING "Directory"                FORMAT a60


WITH asm_alias           AS (SELECT /*+ NO_MERGE MATERIALIZE */ * FROM v$asm_alias     )
   , asm_diskgroup_stat  AS (SELECT /*+ NO_MERGE MATERIALIZE */ * FROM v$asm_diskgroup_stat )
   , asm_file            AS (SELECT /*+ NO_MERGE MATERIALIZE */ * FROM v$asm_file      )
   , aliases as  (SELECT /*+ no_merge materialize */ 
                         SYS_CONNECT_BY_PATH(a.name, '/') File_Path
                       , level hierarchy_level
                       , CONNECT_BY_ISLEAF
                       , a.*
                    FROM asm_alias a
                   CONNECT BY NOCYCLE 
                             PRIOR a.group_number    = a.group_number
                         AND PRIOR a.reference_index = a.parent_index 
                   START WITH  mod(parent_index, power(2, 24)) = 0
                                               AND reference_index IN (SELECT a2.reference_index 
                                                     FROM asm_alias a2 
                                                     WHERE (mod(a2.parent_index, power(2, 24))) = 0 
                                                   /*Parent level database directory e.g. +DATA/MYDB etc */        
                                                         )
   )             
, files as
    (
      SELECT SUBSTR('+' || g.name || a.file_path,1, INSTR('+' || g.name || a.file_path,'/',-1)  )  as parent_directory
          , '+' || g.name || a.file_path as file_path
          , g.name DiskGroup 
          , f.type
          , f.block_size
          , f.space
          , f.redundancy
          , f.redundancy_lowered
          , f.striped
          , f.bytes
          , f.creation_date
          , f.modification_date
      FROM asm_diskgroup_stat g 
           JOIN aliases a ON a.group_number = g.group_number
           LEFT OUTER JOIN asm_file f ON f.group_number = a.group_number 
                                        AND f.file_number = a.file_number 
                                        AND f.incarnation = a.file_incarnation
       )
SELECT af.DiskGroup
     , af.type file_type
     , ROUND(sum(af.bytes)/1024/1024/1024)  Mirrored_UsedSize
     , ROUND(sum(af.space)/1024/1024/1024)  UnMirrored_UsedSize
     , af.parent_directory  
  FROM files af
 WHERE af.diskgroup like '&&DISKGROUP_NAME' ESCAPE '\'
   AND af.file_path LIKE '&&DIRECTORY' ESCAPE '\'
GROUP BY af.DiskGroup
       , af.type
       , af.parent_directory  
ORDER BY af.DiskGroup
       , af.type
       , af.parent_directory  
;


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