2026-03-12 20:23:15

idev/dba_row_size.sql

@@ -0,0 +1,66 @@
+-- +----------------------------------------------------------------------------+
+-- |                          Jeffrey M. Hunter                                 |
+-- |                      jhunter@idevelopment.info                             |
+-- |                         www.idevelopment.info                              |
+-- |----------------------------------------------------------------------------|
+-- |      Copyright (c) 1998-2012 Jeffrey M. Hunter. All rights reserved.       |
+-- |----------------------------------------------------------------------------|
+-- | DATABASE : Oracle                                                          |
+-- | FILE     : dba_row_size.sql                                                |
+-- | CLASS    : Database Administration                                         |
+-- | PURPOSE  : Determines the row sizes for all tables in a given schema.      |
+-- | NOTE     : As with any code, ensure to test this script in a development   |
+-- |            environment before attempting to run it in production.          |
+-- +----------------------------------------------------------------------------+
+
+SET TERMOUT OFF;
+COLUMN current_instance NEW_VALUE current_instance NOPRINT;
+SELECT rpad(instance_name, 17) current_instance FROM v$instance;
+SET TERMOUT ON;
+
+PROMPT 
+PROMPT +------------------------------------------------------------------------+
+PROMPT | Report   : Calculate Row Size for Tables in a Specified Schema         |
+PROMPT | Instance : &current_instance                                           |
+PROMPT +------------------------------------------------------------------------+
+
+PROMPT 
+ACCEPT schema CHAR  PROMPT 'Enter schema name : '
+
+SET ECHO        OFF
+SET FEEDBACK    6
+SET HEADING     ON
+SET LINESIZE    180
+SET PAGESIZE    50000
+SET TERMOUT     ON
+SET TIMING      OFF
+SET TRIMOUT     ON
+SET TRIMSPOOL   ON
+SET VERIFY      OFF
+
+CLEAR COLUMNS
+CLEAR BREAKS
+CLEAR COMPUTES
+
+COLUMN Tot_Size   FORMAT 99,999
+COLUMN data_type  FORMAT a15
+
+BREAK ON table_name SKIP 2
+
+COMPUTE sum OF Tot_Size    ON table_name
+COMPUTE sum OF data_length ON table_name
+
+SELECT
+    table_name
+  , column_name
+  , DECODE(    DATA_TYPE
+             , 'NUMBER'   , DATA_PRECISION+DATA_SCALE
+             , 'VARCHAR2' , TO_NUMBER(DATA_LENGTH)
+             , 'CHAR'     , TO_NUMBER(DATA_LENGTH)
+             , 'DATE'     , TO_NUMBER(DATA_LENGTH)) Tot_Size
+  , DATA_TYPE
+FROM      dba_tab_columns
+WHERE     owner = UPPER('&schema')
+ORDER BY  table_name
+        , column_id
+/