Is AL32UTF8 a superset of WE8MSWIN1252?

Because WE8MSWIN1252 is not a strict subset of AL32UTF8 this statement will fail (example: the pound sign is A3 in hex in WE8MSWIN1252 , but in AL32UTF8 it is C2 A3 ). You’ll need to use CSALTER to do this migration. Refer to: Character Set Migration.

What is character set WE8ISO8859P1?

Oracle character set WE8ISO8859P1 allows support for 8-bit characters. While this character set supports ASCII characters, not all ASCII code pages are the same. Note: Not all characters might be correctly displayed on all clients if the Oracle codepage is not updated to a supported codepage.

What is AL32UTF8 character set?

The AL32UTF8 character set supports the latest version of the Unicode standard. It encodes characters in one, two, or three bytes. Supplementary characters require four bytes. It is for ASCII-based platforms.

Is WE8ISO8859P1 multibyte?

WE8ISO8859P1, then all multibyte Chinese data (from the ZHS16GBK character set) is stored as multiples of single-byte WE8ISO8859P1 data. This means that Oracle treats these characters as single-byte WE8ISO8859P1 characters.

Is UTF8 subset of AL32UTF8?

If you check Subsets and Supersets you can see that UTF8 is a superset of AL32UTF8. This means everything should work just fine using the new AL32UTF8 as it was working using the old UTF8. Aka AL32UTF8 has extra characters available but it has all the same as UTF8.

What is Oracle Csscan?

The Csscan tool analyzes the code points in the database and verifies that they are known in the source the database characterset and known in the target database characterset.

What is the difference between AL32UTF8 and AL16UTF16?

AL32UTF8 is a variable length character set. Basic ASCII characters require 1 byte of storage, Western European characters require 2 bytes of storage, Asian characters require 3 bytes of storage and a handful of characters require 4 bytes of storage. AL16UTF16 is also a variable length character set.

Is WE8MSWIN1252 single byte?

The third column shows the hexadecimal representation of each character in the AL32UTF8 character set. Each pair of letters and numbers represents one byte. For example, รค ( a with an umlaut) is a single-byte character ( E4 ) in WE8MSWIN1252, but it becomes a two-byte character ( C3 A4 ) in AL32UTF8.

Can we change Nls_characterset?

To change the nls_characterset you can execute an alter database command, but beware that this can make your data corrupt: alter database character set AL32UTF8; You must then bounce the database for the change to take effect. It is also a best practice to take a full backup before changing nls_characterset.

What is DMU in Oracle?

Oracle Database Migration Assistant for Unicode (DMU) is a unique next-generation migration tool providing an end-to-end solution for migrating your databases from legacy encodings to Unicode.

How do I use Csscan?

Use of the csscan utility:

  1. Make sure that the following file exist in your server.
  2. Make sure that you have the most updated version if not replace them with the downloaded version.
  3. Run the csminst.
  4. Once the csminst.
  5. Check the csminst.
  6. Type the following: # csscan help=y.
  7. Run the csscan utility:
  8. Check the following files: