sqlplus 
connect internal
startup nomount
@crdb

NEED:

create directories
$ORACLE_HOME/oradata
$ORACLE_HOME/admin/CDBT/udump
$ORACLE_HOME/admin/CDBT/bdump
$ORACLE_HOME/admin/CDBT/cdump


vi $ORACLE_HOME/initCDBT.ora

db_name = CDBT
instance_name = CDBT
#db_domain = oracleadvice.com
#global_names = TRUE
#service_names = CDBT
#local_listener = '(ADDRESS = (PROTOCOL=TCP)(HOST=s2tibo2)(PORT=1522))'
compatible = 9.2.0
optimizer_mode = CHOOSE
optimizer_features_enable = 9.2.0
#o7_dictionary_accessibility = TRUE
control_files = (/export/home/oracle/oradata/CDBT_1.ctl,
/export/home/oracle/oradata/CDBT_2.crl)
background_dump_dest = /export/home/oracle/admin/CDBT/bdump
core_dump_dest = /export/home/oracle/admin/CDBT/cdump
user_dump_dest = /export/home/oracle/admin/CDBT/udump
background_core_dump = PARTIAL
shadow_core_dump = PARTIAL
max_dump_file_size = 5M
oracle_trace_enable = FALSE
statistics_level = TYPICAL # sets timed_statistics to true
db_cache_advice = ON
#utl_file_dir = /tmp
#*******************************************************************
# Redo log operation
#*******************************************************************
log_archive_start = FALSE
log_archive_dest = /export/home/oracle/oradata/arch
log_archive_format = CDBT%S.arc
log_buffer = 163840
fast_start_mttr_target = 600 # 10 minutes
fast_start_parallel_rollback = LOW # 2*cpu_count
#*******************************************************************
# UNDO segment management
#*******************************************************************
undo_management = AUTO
undo_tablespace = UNDOTS
undo_retention = 1800 # 30 minutes flashback
#*******************************************************************
# Memory parameters
#*******************************************************************
sga_max_size = 300M
db_cache_size = 50M
shared_pool_size = 90M
large_pool_size = 30M
#java_pool_size = 30M
pga_aggregate_target = 100M
workarea_size_policy = AUTO # ignore %_area_size parameters
# Use I/O slaves instead of the shadow process for RMAN targets
#backup_tape_io_slaves = TRUE
processes = 100
open_cursors=100
os_authent_prefix = ""