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How do I add a CLOB column in Oracle?

Type an "ALTER TABLE" command to add a CLOB item to an existing table, using the following SQL code as a guide: ALTER TABLE your_table ( add big_text_field CLOB ); Press "Enter" to execute the command. Here, "your_table" is the name of a database table to which you want a CLOB field added.

Also asked, what is CLOB column in Oracle?

CLOB. Stands for "Character Large Object." A CLOB is a data type used by various database management systems, including Oracle and DB2. It stores large amounts of character data, up to 4 GB in size. Instead, the CLOB field serves as an address, which references the location of the data.

Also Know, what is CLOB datatype in Oracle with example?

Data Type Description
CLOB Use this to store large ANSI text
NCLOB Same as CLOB except that characters are stored in multi-byte character set. Uses twice the space as CLOB to store the same thing when used inappropriately.

Also know, how many CLOB columns are allowed in a table Oracle?

Datatype Limits

Datatypes Limit
CHAR VARYING Maximum size: 4000 bytes
CLOB Maximum size: (4 GB - 1) * DB_BLOCK_SIZE initialization parameter (8 TB to 128 TB)
Literals (characters or numbers in SQL or PL/SQL) Maximum size: 4000 characters
LONG Maximum size: 2 GB - 1

How many characters is a CLOB?

A CLOB without a specified length is defaulted to two giga characters (2,147,483,647).

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