The sample initialization parameter file provided by Oracle seems to be not working. But we can try to start the new instance with a minimal initialization parameter file (PFile). First you can create another PFile, $ORACLE_HOME/database/initggl_ini_min.ora, as shown below:

db_name=ggl

control_files=("oraclexeoradatagglcontrol.dbf")

undo_management=AUTO

Then start the ggl instance again:

SQL> CONNECT / AS SYSDBA

Connected.

SQL> STARTUP NOMOUNT

PFILE=$ORACLE_HOME/database/initggl_ini_min.ora

ORACLE instance started.

Total System Global Area 113246208 bytes

Fixed Size   1286028 bytes

Variable Size   58720372 bytes

Database Buffers   50331648 bytes

Redo Buffers   2908160 bytes