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метаданные по LOBs
Время создания: 09.05.2017 12:29
Раздел: PL/SQL - LOBs
Запись: xintrea/mytetra_db_mcold/master/base/1494322155b1whb7335l/text.html на raw.githubusercontent.com
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select table_name, column_name, segment_name from user_lobs where table_name = 'LOBS_TAB'; SQL> describe user_lobs Name Type Nullable Default Comments --------------- -------------- -------- ------- ---------------------------------------------------------------------- TABLE_NAME VARCHAR2(30) Y Name of the table containing the LOB COLUMN_NAME VARCHAR2(4000) Y Name of the LOB column or attribute SEGMENT_NAME VARCHAR2(30) Y Name of the LOB segment TABLESPACE_NAME VARCHAR2(30) Y Name of the tablespace containing the LOB segment INDEX_NAME VARCHAR2(30) Y Name of the LOB index CHUNK NUMBER Y Size of the LOB chunk as a unit of allocation/manipulation in bytes PCTVERSION NUMBER Y Maximum percentage of the LOB space used for versioning RETENTION NUMBER Y Maximum time duration for versioning of the LOB space FREEPOOLS NUMBER Y Number of freepools for this LOB segment CACHE VARCHAR2(10) Y Is the LOB accessed through the buffer cache? LOGGING VARCHAR2(7) Y Are changes to the LOB logged? ENCRYPT VARCHAR2(4) Y Is this lob encrypted? COMPRESSION VARCHAR2(6) Y What level of compression is used for this lob? DEDUPLICATION VARCHAR2(15) Y What kind of DEDUPLICATION is used for this lob? IN_ROW VARCHAR2(3) Y Are some of the LOBs stored with the base row? FORMAT VARCHAR2(15) Y Is the LOB storage format dependent on the endianness of the platform? PARTITIONED VARCHAR2(3) Y Is the LOB column in a partitioned table? SECUREFILE VARCHAR2(3) Y Is the LOB a SECUREFILE LOB? SEGMENT_CREATED VARCHAR2(3) Y Is the LOB segment created? RETENTION_TYPE VARCHAR2(7) Y What kind of retention is inuse? RETENTION_VALUE NUMBER Y What is the retention value? |
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Так же в этом разделе:
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