Query to find recoverable space on segments of business
Hello
I use under SQL to find how much space we can recover after the reduction of the LOB segments.
DB version: 11.2.0.3
WITH ACE TEMP_TAB)
"T_ORDER" SELECT TABLE_NAME, COLUMN_NAME "BLOB_COL", ROUND(SUM(dbms_lob.getlength(BLOB_COL)/1024/1024)) T_ORDER UNION ALL SPACE_USED
"T_ORDER" SELECT TABLE_NAME, COLUMN_NAME "CLOB_COL", ROUND(SUM(dbms_lob.getlength(CLOB_COL)/1024/1024)) T_ORDER SPACE_USED
)
SELECT SEG.*, TEMP_TAB. SPACE_USED, TOTALSIZE_MB-SPACE_USED SPACE_RECLAIM OF)
SELECT T2. TABLE_NAME, T2. COLUMN_NAME, T1. NOM_SEGMENT, ROUND (T1. BYTES/1024/1024,0) TOTALSIZE_MB
Of
DBA_SEGMENTS T1,
DBA_LOBS T2
WHERE T1. OWNER = T2. OWNER
AND T1. NOM_SEGMENT = T2. NOM_SEGMENT
AND T2. TABLE_NAME = "T_ORDER") SEG, TEMP_TAB
WHERE SEG. TABLE_NAME = TABLE TEMP_TAB.
AND SEG. COLUMN_NAME = COLUMN_NAME TEMP_TAB.
/
TABLE-NAME | COLUMN_NAME | NOM_SEGMENT | TOTALSIZE_MB | SPACE_USED | SPACE_RECLAIM |
T_ORDER | CLOB_COL | T_ORDER_CLOB_COL | 9 | 3 | 6 |
T_ORDER | BLOB_COL | T_ORDER_CONTENT_COL | 56799 | 54396 | 2403 |
Is there one way other/more intelligent to write/edit the SQL code (as the number of tables is about 100 with multiple lob columns)
or is it fine ( frame a SQL as mentioned above, for all the lob of tables in a temporary table)
Kind regards
Veera
That's OK by me.
Tags: Database
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