The PDO_OCI Data Source Name (DSN) is composed of the following elements:
DSN prefix
The DSN prefix is oci:. If you are connecting
to a database defined in tnsnames.ora, append the
name of the database to the DSN prefix and your DSN is complete.
dbname (Oracle Instant Client)
The URI for the Oracle Instant Client connection takes the form of
dbname=//hostname:port-number/database.
Examples
Example 1. PDO_OCI DSN examples
The following examples show a PDO_OCI DSN for connecting to
Oracle databases:
