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BASIC LOBS Storage parameters - 19C

in Database Administration (MOSC) 17 commentsAnswered


Hello

We have inherited a 19c database where we have a table that is 1 TB in size with one BLOB data type 

The size of table is a little over 1 TB with 1TB being used by that LOB column

The LOB COLUMN is IMAGE_RECORD and is created as BASIC LOB (instead of SECURE FILE)

Here is the storage setting

LOB (IMAGE_RECORD) STORE AS BASICFILE (

 TABLESPACE APP_LOBS_T

 ENABLE   STORAGE IN ROW

 CHUNK    32768

 RETENTION

 NOCACHE

 LOGGING

 STORAGE  (

       INITIAL     160K

       NEXT       1M

       MINEXTENTS    1

       MAXEXTENTS    UNLIMITED

       PCTINCREASE   0

       BUFFER_POOL   DEFAULT


Quering DBA_EXTENTS and DBA_SEGMENTS we confirmed that there are 18,409 extents in this LOB Segment

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