Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

size of varchar2

Posted on 2013-12-10
5
514 Views
Last Modified: 2013-12-10
What is the max size of VARCHAR2? How many zeros it can hold? -
0
Comment
Question by:d27m11y
5 Comments
 
LVL 76

Assisted Solution

by:slightwv (䄆 Netminder)
slightwv (䄆 Netminder) earned 250 total points
ID: 39709116
VARCHAR2 in a table or SQL: 4000 bytes.

In PL/SQL code: 32K.

The docs have this:
http://docs.oracle.com/cd/E11882_01/appdev.112/e25519/datatypes.htm#CHDDCGEE

>>How many zeros it can hold?

As many as can fit given the constraints above and your character set?
0
 
LVL 8

Expert Comment

by:5teveo
ID: 39709118
http://www.orafaq.com/faq/what_is_the_difference_between_varchar_varchar2_and_char_data_types

'Varchar2' appears to hold 4000 characters vs 2000 of 'varchar'
0
 
LVL 76

Expert Comment

by:slightwv (䄆 Netminder)
ID: 39709123
>>'Varchar2' appears to hold 4000 characters vs 2000 of 'varchar'

Incorrect.  It's bytes not characters.  If the database is using a multi-byte characterset the maximum number of characters is reduced.  For example: a 2-byte characterset the maximum is 2000 characters.
0
 
LVL 74

Accepted Solution

by:
sdstuber earned 250 total points
ID: 39709179
depends on the version.

up through version 7,  varchar2 had a limit of 2000 bytes
from version 8 through 11gR2  varchar2 has a limit of 4000 bytes

in 12c, default limit is 4000 bytes, but you can extend it to 32767 bytes but they are stored externally like LOB segments

All of those are for SQL limits.

In pl/sql, varchar2 can hold up to 32767 bytes
0
 
LVL 15

Expert Comment

by:Franck Pachot
ID: 39709458
Hi,
As 'zero' is probably not a multibyte character, you can store 4000 of them. But I'm not sure it's a good idea to store zeros like that.
Regards,
Franck.
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Truncate is a DDL Command where as Delete is a DML Command. Both will delete data from table, but what is the difference between these below statements truncate table <table_name> ?? delete from <table_name> ?? The first command cannot be …
I remember the day when someone asked me to create a user for an application developement. The user should be able to create views and materialized views and, so, I used the following syntax: (CODE) This way, I guessed, I would ensure that use…
This video explains at a high level with the mandatory Oracle Memory processes are as well as touching on some of the more common optional ones.
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.

807 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question