CON_NAME_TO_ID
Syntax
Purpose
CON_NAME_TO_ID takes as its argument a container name and returns the container ID. For container_name, specify a string, or an expression that resolves to a string, in any data type. The function returns a NUMBER value.
                  
This function is useful in a multitenant container database (CDB). If you use this function in a non-CDB, then it returns 0.
Example
The following query displays the ID and name for all containers in a CDB. The sample output shown is for the purpose of this example.
SELECT CON_ID, NAME
  FROM V$CONTAINERS;
    CON_ID NAME
---------- ----------
         1 CDB$ROOT
         2 PDB$SEED
         4 SALESPDB
The following statement returns the ID for the container named SALESPDB:
                  
SELECT CON_NAME_TO_ID('SALESPDB') "Container ID"
  FROM DUAL;
Container ID
------------
           4