What is the maximum possible length of VARCHAR2 in Oracle?
Maximum size is 4000 bytes or characters, and minimum is 1 byte or 1 character. You must specify size for VARCHAR2 .
What is maximum length size for the data type VARCHAR2 30 )?
You must specify size for VARCHAR2 . Minimum size is 1 byte or 1 character. Maximum size is: 32767 bytes or characters if MAX_STRING_SIZE = EXTENDED.
How big is VARCHAR2?
The VARCHAR2 datatype represents variable-length character strings. On most platforms, the maximum length of a VARCHAR2 value is 65535 bytes.
Which is better VarChar or VARCHAR2?
VARCHAR2 is the same as VARCHAR in the oracle database. The main difference is that VARCHAR is ANSI Standard and VARCHAR2 is Oracle standard. The VarChar2 data type is used to store the character values….Difference between char, varchar and VARCHAR2 in Oracle.
| Sno | Char | VarChar/VarChar2 |
|---|---|---|
| 8 | It is 50% much faster than VarChar/VarChar2 | It is relatively slower as compared to Char |
What is the max length of long in Oracle?
2 GB – 1
Datatype Limits
| Datatypes | Limit |
|---|---|
| LONG | Maximum size: 2 GB – 1 |
| NCHAR | Maximum size: 2000 bytes |
| NCHAR VARYING | Maximum size: 4000 bytes |
| NCLOB | Maximum size: (4 GB – 1) * DB_BLOCK_SIZE initialization parameter (8 TB to 128 TB) |
Why we use VARCHAR2 instead of VARCHAR?
The main difference is that VARCHAR is ANSI Standard and VARCHAR2 is Oracle standard. The VarChar2 data type is used to store the character values. It is a variable-length data type i.e we can change the size of the character variable at execution time. Hence, it is also called a Dynamic datatype.
How many characters can a CLOB hold in Oracle?
A CLOB (character large object) value can be up to 2,147,483,647 characters long.
What is the difference between VARCHAR2 and NVARCHAR2 in Oracle?
VARCHAR2 vs. NVARCHAR2. First, the maximum size of VARCHAR2 can be in either bytes or characters, whereas the maximum size of NVARCHAR2 is only in characters. In addition, the maximum byte length of an NVARCHAR2 depends on the configured national character set.