E-Business 19c DB upgrade post step: Update the CDB initialization parameters: which db port of loca

@$ORACLE_HOME/dbs/&lt

I am performing the post steps for a 19c upgrade of an 11.2.0.4 db for EBS and am in the convert to PDB section where the MOS doc: 2552181.1 stated the following:

EBS 12.2.5

CDB=CDBSBX

PDB=SBX

OS=Solaris 11 SPARC 64-bit

Update the CDB initialization parameters

$ cd $ORACLE_HOME/appsutil
$ . ./txkSetCfgCDB.env dboraclehome=<full path of ORACLE_HOME>
$ export ORACLE_SID=<CDB SID>
$ sqlplus "/ as sysdba"
SQL> startup nomount;
SQL> @$ORACLE_HOME/dbs/&lt;source SID>_initparam.sql
SQL> alter system set LOCAL_LISTENER="<hostname>:<port number>" scope=both;
SQL> shutdown;
SQL> startup;

Is the port number for the CDB or PDB? I would assume CDB, but we all know what can go wrong when assuming.