TO_LOB function in Oracle

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The TO_LOB is one of the vital Conversion functions of Oracle. It is used to convert a LONG or LONG RAW values to LOB values. The TO_LOB function is supported in the various versions of the Oracle/PLSQL, including, Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i and Oracle 8i.

Syntax: 

TO_LOB ( long_column )

Parameters:
long_column: It is used to specify the LONG or LONG RAW value to be converted.

Example: 

insert into class (lob_column)
select TO_LOB(long_column)
from students;

Explanation:
Here, the value in the field called long_column will be converted to a LOB value.