BLOB
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A BLOB (Binary Large Object) is an Oracle data type that can hold up to 4 GB of data. BLOB's are handy for storing digitized information (e.g., images, audio, video).
Examples
Create a table containing a BLOB column:
CREATE TABLE lob_table (id NUMBER, doc BLOB); INSERT INTO lob_table VALUES (1, EMPTY_BLOB());
Load an external file into the table:
DECLARE src_lob BFILE := BFILENAME('MY_DIR', '/tmp/me.gif'); dest_lob BLOB; BEGIN INSERT INTO lob_table VALUES(2, EMPTY_BLOB()) RETURNING doc INTO dest_lob; DBMS_LOB.OPEN(src_lob, DBMS_LOB.LOB_READONLY); DBMS_LOB.LoadFromFile( DEST_LOB => dest_lob, SRC_LOB => src_lob, AMOUNT => DBMS_LOB.GETLENGTH(src_lob) ); DBMS_LOB.CLOSE(src_lob); COMMIT; END; /
Also see
- CLOB - Character large Object
- NCLOB - similar to CLOB, but characters are stored in a multibyte national character set
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