Avamar: How to Obtain Database Size and Last Backup Information

1. Open SQL Management Studio.
2. Click  "New Query".
3. Copy and perform the below script:

IF OBJECT_ID('tempdb.dbo.#space') IS NOT NULL
    DROP TABLE #space
 
CREATE TABLE #space (
      database_id INT PRIMARY KEY
    , data_used_size DECIMAL(18,2)
    , log_used_size DECIMAL(18,2)
)
 
DECLARE @SQL NVARCHAR(MAX)
 
SELECT @SQL = STUFF((
    SELECT '
    USE [' + d.name + ']
    INSERT INTO #space (database_id, data_used_size, log_used_size)
    SELECT
          DB_ID()
        , SUM(CASE WHEN [type] = 0 THEN space_used END)
        , SUM(CASE WHEN [type] = 1 THEN space_used END)
    FROM (
        SELECT s.[type], space_used = SUM(FILEPROPERTY(s.name, ''SpaceUsed'') * 8. / 1024)
        FROM sys.database_files s
        GROUP BY s.[type]
    ) t;'
    FROM sys.databases d
    WHERE d.[state] = 0
    FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, '')
 
EXEC sys.sp_executesql @SQL
 
SELECT
      d.database_id
    , d.name
    , d.state_desc
    , d.recovery_model_desc
    , t.total_size
    , t.data_size
    , s.data_used_size
    , t.log_size
    , s.log_used_size
    , bu.full_last_date
    , bu.full_size
    , bu.log_last_date
    , bu.log_size
FROM (
    SELECT
          database_id
        , log_size = CAST(SUM(CASE WHEN [type] = 1 THEN size END) * 8. / 1024 AS DECIMAL(18,2))
        , data_size = CAST(SUM(CASE WHEN [type] = 0 THEN size END) * 8. / 1024 AS DECIMAL(18,2))
        , total_size = CAST(SUM(size) * 8. / 1024 AS DECIMAL(18,2))
    FROM sys.master_files
    GROUP BY database_id
) t
JOIN sys.databases d ON d.database_id = t.database_id
LEFT JOIN #space s ON d.database_id = s.database_id
LEFT JOIN (
    SELECT
          database_name
        , full_last_date = MAX(CASE WHEN [type] = 'D' THEN backup_finish_date END)
        , full_size = MAX(CASE WHEN [type] = 'D' THEN backup_size END)
        , log_last_date = MAX(CASE WHEN [type] = 'L' THEN backup_finish_date END)
        , log_size = MAX(CASE WHEN [type] = 'L' THEN backup_size END)
    FROM (
        SELECT
              s.database_name
            , s.[type]
            , s.backup_finish_date
            , backup_size =
                        CAST(CASE WHEN s.backup_size = s.compressed_backup_size
                                    THEN s.backup_size
                                    ELSE s.compressed_backup_size
                        END / 1048576.0 AS DECIMAL(18,2))
            , RowNum = ROW_NUMBER() OVER (PARTITION BY s.database_name, s.[type] ORDER BY s.backup_finish_date DESC)
        FROM msdb.dbo.backupset s
        WHERE s.[type] IN ('D', 'L')
    ) f
    WHERE f.RowNum = 1
    GROUP BY f.database_name
) bu ON d.name = bu.database_name
ORDER BY t.total_size DESC

Reference: Select SQL Server database size (External Link)

• The most relevant fields and the output includes are:

  • recovery_model_desc: Description of recovery model.
  • total_size: Data and log total initial files defined size.
  • data_size: Initial data defined file size.
  • data_used_size: Current datafile usage.
  • log_size: Initial log defined file size.
  • log_used_size: Current log file usage.
  • full_last_date: Date and time the FULL backup operation finished. Can be NULL.
  • full_size: Size of the FULL backup set. Can be NULL.
  • log_last _date: Date and time the LOG backup operation finished. Can be NULL.
  • log_size: Size of the LOG backup set. Can be NULL.
    
    
     
     

• This script could be useful to compare the backed up data size displayed in the Avamar UI, with the database size data the SQL server is reporting.
• The full and incremental last backup date should match what is displayed in the Avamar UI as well.
• "Total size" is what Avamar approximately displays when browsing a database from the "backup" tab.