Monday, June 8, 2009

TABLESPACE BİLGİLERİ

Databasemizde bulunan Tablespaceler hakkında bilgi almak için aşağıdaki sorgu işimizi görecektir. Aşağıdaki sorguyu kullanarak tablespace’nin durumu(status) hakkında bilgi alabiliriz. Bu ne işimize yaracak derseniz öyle durumlar olur ki select komutu bile çalişmaz databaseden veri çekemediğinizde yada yazamadığınızda ilk bakmanız gereken yerlerden biriside bu olabilir.

SELECT tablespace_name, initial_extent, next_extent, min_extents,
max_extents, pct_increase, status, CONTENTS
FROM dba_tablespaces
ORDER BY tablespace_name

· Tablespace Name – Tablespace Name

· Initial Extent - Default initial extent size

· Next Extent - Default incremental extent size

· Min Extents - Default minimum number of extents

· Max Extents - Default maximum number of extents

· PCT Increase - Default percent increase for extent size

· Status - Tablespace status: ONLINE, OFFLINE, or INVALID (tablespace has been dropped)

SQL> desc dba_tablespaces;

Adı Boş? Tür

----------------------------------------- -------- ----------------------------

TABLESPACE_NAME NOT NULL VARCHAR2(30)

BLOCK_SIZE NOT NULL NUMBER

INITIAL_EXTENT NUMBER

NEXT_EXTENT NUMBER

MIN_EXTENTS NOT NULL NUMBER

MAX_EXTENTS NUMBER

PCT_INCREASE NUMBER

MIN_EXTLEN NUMBER

STATUS VARCHAR2(9)

CONTENTS VARCHAR2(9)

LOGGING VARCHAR2(9)

FORCE_LOGGING VARCHAR2(3)

EXTENT_MANAGEMENT VARCHAR2(10)

ALLOCATION_TYPE VARCHAR2(9)

PLUGGED_IN VARCHAR2(3)

SEGMENT_SPACE_MANAGEMENT VARCHAR2(6)

DEF_TAB_COMPRESSION VARCHAR2(8)

RETENTION VARCHAR2(11)

BIGFILE VARCHAR2(3)

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