Sets the client information for Oracle tracing.
The client information is registered with the database when the next 'round-trip' from PHP to the database occurs, typically when an SQL statement is executed.
The client information can subsequently be queried from database administration views such as V$SESSION.
The value may be retained across persistent connections.
An Oracle connection identifier, returned by oci_connect, oci_pconnect, or oci_new_connect.
User chosen string up to 64 bytes long.
Returns true on success or false on failure.
Note:Oracle version requirement
This function is available when PHP is linked with Oracle Database libraries from version 10g onwards.
With older versions of OCI8 or the Oracle Database, the client information can be set using the Oracle DBMS_APPLICATION_INFO package. This is less efficient than using oci_set_client_info.
Some but not all OCI8 functions cause round-trips. Round-trips to the database may not occur with queries when result caching is enabled.