A personality set in Oracle defines the set of characters that may be saved and processed within the database. Every character set is related to a selected encoding, which defines how the characters are represented in binary kind. Checking the character set of an Oracle database is necessary for a number of causes. First, the character set determines the vary of characters that may be saved within the database. If the character set doesn’t assist a selected character, it can’t be saved within the database. Second, the character set impacts the way in which information is sorted and in contrast. For instance, information saved in a Unicode character set shall be sorted otherwise than information saved in a single-byte character set. Third, the character set can have an effect on the efficiency of the database. Some character units are extra environment friendly than others, so choosing the proper character set can enhance the efficiency of the database.There are a number of methods to examine the character set of an Oracle database. A technique is to make use of the next SQL question:
sqlSELECT valueFROM v$nls_parametersWHERE parameter = ‘NLS_CHARACTERSET’;