May 2012
Intermediate to advanced
440 pages
9h 1m
English
Content preview from Oracle Advanced PL/SQL Developer Professional GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using temporary LOBs
Temporary LOBs provide a temporary solution to hold a LOB data in a limited scope—maximum up to a SESSION. It can be used in a PL/SQL block as a local variable. A temporary LOB created using the DBMS_LOB package resides in temporary tablespace. Note that neither the redo logs nor the rollback information is generated for it. For this reason, they yield better performance within a block.
A temporary LOB can be created as any of the internal LOBs, but cannot be initialized using empty LOB locator constructor methods (EMPTY_CLOB and EMPTY_BLOB). They can be a handy solution when manipulative operations are performed on the LOB type column in a PL/SQL block.
Temporary LOB operations
A temporary LOB allows most of the LOB operations ...
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