nls_timestamp_format

Description

nls_timestamp_format specifies the format for converting timestamp or timestamp ltz values to strings and for converting strings to timestamp or timestamp ltz values.

Privilege requirements

• Query variables

  • Global level

    sys tenants and all user tenants can execute the SHOW VARIABLES statement or query the SYS.TENANT_VIRTUAL_GLOBAL_VARIABLE view (Oracle-compatible mode) to obtain the values of Global system variables.

  • Session level

    sys tenants and all user tenants can execute the SHOW VARIABLES statement or query the SYS.TENANT_VIRTUAL_SESSION_VARIABLE view (Oracle-compatible mode) to obtain the values of Session system variables.

• Modify variables

  • Global level

    • sys tenants can modify the values of Global system variables.

    • Oracle user tenants must have the ALTER SYSTEM privilege to modify the values of Global system variables.

  • Session level

    sys tenants and all user tenants can modify the values of Session system variables.

Attributes

Usage

This variable specifies the default date format used with the to_CHAR and to_TIMESTAMP functions. The commonly used value is YYYY-MM-DD HH24:MI:SS.FF.

Examples

• Session level

  obclient> SET nls_timestamp_format='YYYY-MM-DD HH24:MI:SS.FF';
  

• Global level

  obclient> SET GLOBAL nls_timestamp_format='YYYY-MM-DD HH24:MI:SS.FF';
  

References

• to_CHAR
• to_TIMESTAMP
• Date and time expressions
• Considerations for data conversion