You need to structure your tables properly. 254 fields is incorrect. Your multiple tables with the same structure is incorrect.
You need to determine the proper structure for your database, create it and then move your data to that structure. Read up on normalization that is what that process is called. Work through a few tutorials, give it a shot on your data, set up your tables in Access's relationship tool and post a screenshot of it back here and we can help you get the right structure.
I haven't got the right to post pic. However writing the fields:-
period_start_time
bsc_int_id
bsc_name
bcf_name
bts_int_id
bts_name
bts_id
seg_id
la_id_lac
cell_id
total_call_trf_6
traffic_area_trf_1
traffic_trf_12b
half_rate_traffic_trf_102
amr_full_rate
amr_half_rate
average_dhr_traffic
sdcch_comp_rate
tch_comp_rate
handover_success_rate
sdcch_assignment
tch_assignment
rx_qual_dl
rx_qual_ul
random_acc_succ_rate
ave_busy_tch
res_av_denom14
ave_tch_busy_half
sdcch_comp_rate_nom
sdcch_comp_rate_denom
tch_comp_rate_nom
tch_comp_rate_denom
handover_success_rate_nom
handover_success_rate_denom
sdcch_assignment_nom
sdcch_assignment_denom
tch_assignment_nom
tch_assignment_denom
rx_qual_dl_nom
rx_qual_dl_denom
rx_qual_ul_nom
rx_qual_ul_denom
random_acc_succ_rate_nom
random_acc_succ_rate_denom
sdcch_radio_fail
sdcch_rf_old_ho
sdcch_user_act
sdcch_bcsu_reset
sdcch_netw_act
sdcch_bts_fail
sdcch_lapd_fail
sdcch_a_if_fail_call
sdcch_a_if_fail_old
sdcch_assign
sdcch_ho_seiz
sdcch_abis_fail_call
sdcch_abis_fail_old
drop_after_tch_assign
tch_re_est_release
tch_new_call_assign
msc_i_tch_tch
bsc_i_tch_tch
bsc_o_tch_tch
msc_o_tch_tch
bsc_o_succ_ho
cell_succ_ho
msc_o_succ_ho
msc_o_ho_cmd
bsc_o_ho_cmd_assgn
bts_ho_assgn
sdcch_busy_att
sdcch_seiz_att
tch_seiz_due_sdcch_con
tch_call_req
tch_norm_seiz
tch_succ_seiz_for_dir_acc
bsc_o_sdcch_tch
cell_sdcch_tch
msc_o_sdcch_tch
a_if_crc_mismatch_call_setup
freq_dl_qual0
freq_dl_qual1
freq_dl_qual2
freq_dl_qual3
freq_dl_qual4
freq_dl_qual5
freq_dl_qual6
freq_dl_qual7
freq_ul_qual0
freq_ul_qual1
freq_ul_qual2
freq_ul_qual3
freq_ul_qual4
freq_ul_qual5
freq_ul_qual6
freq_ul_qual7
ghost_ccch_res
rej_seiz_att_due_dist
bcsu_overload_lower_limit
bcsu_overload_upper_limit
bcsu_overload_deleted_rach
packet_ch_req
ch_req_msg_rec
erlang_drop_cell
no_sdcch
tch_cong_time_cngt1
sdcch_cong_time_cngt2
traffic_nom_trf_12b
traffic_denom_trf_12b
no_sdcch_nom
no_sdcch_denom
tch_rej_due_req_ch_a_if_crc
tch_radio_fail
tch_rf_old_ho
tch_abis_fail_call
tch_abis_fail_old
tch_a_if_fail_call
tch_a_if_fail_old
tch_tr_fail
tch_tr_fail_old
erlang_drop_nom
erlang_drop_denom
tch_lapd_fail
tch_bts_fail
tch_user_act
tch_bcsu_reset
tch_netw_act
tch_act_fail_call
bsc_o_tch_tch_at
bsc_o_sdcch_tch_at
bsc_o_sdcch_at
bsc_i_sdcch_tch
bsc_i_tch_tch_at
bsc_i_sdcch_tch_at
bsc_i_sdcch_at
bsc_i_succ_ho
bsc_i_unsucc_a_int_circ_type
cell_tch_tch_at
cell_sdcch_tch_at
cell_sdcch_at
msc_i_sdcch_tch
msc_i_tch_tch_at
msc_i_sdcch_tch_at
msc_i_sdcch_at
msc_i_succ_ho
msc_o_tch_tch_at
msc_o_sdcch_tch_at
msc_o_sdcch_at
msc_controlled_in_ho
ho_unsucc_a_int_circ_type
tch_ho_assign
tch_norm_release
tch_ho_release
ave_sdcch_sub
ave_non_avail_sdcch
res_av_denom3
tch_cong_time
sdcch_cong_time
ms_tch_succ_seiz_assign_cmplt
ave_avail_tch_sum
ave_avail_tch_den
trx_type
period_duration
spare057044
tsqigood_nom
tsqiaccept_nom
tsqibad_nom
freq_dl_all
tch_pri_subscr_req
tch_pri_subscr_succ_seiz
que_all_ass_req_att
ava_21a
ava_17a
spare057046
msc_o_call_clr
bsc_o_call_clr
cell_call_clr
ava_34a
succ_released_ctm_call
cell_fail_lack
msc_o_fail_lack
bsc_o_fail_lack
900 Band
1800 Band
Total TRX Count
dhr_multiplexing_attempts
dhr_multiplx_fail_due_tch_res
csdap_res_alloc_att_for_dhr
dhr_mplx_fail_due_csdap_res
dhr_mplx_fail_due_other
ave_busy_dhr_tch
ave_busy_dhr_tch_denom
ho_from_amr_hr_to_dhr_succ
ho_attempt_from_amr_hr_to_dhr
ho_from_amr_fr_to_dhr_succ
ho_attempt_from_amr_fr_to_dhr
total_dhr_multiplexing_failure_rate
dhr_multiplexing_failure_rate_due_to_lack_of_suitable_pair
dhr_multiplexing_failure_rate_due_to_csdap
dhr_multiplexing_failure_rate_due_to_other_reasons
amr_hr_to_dhr_ho_success_rate
amr_fr_to_dhr_ho_success_rate
flag
tch_req_rej_due_abis_cong
call_setup_rej_due_abis_cong
gprs_terr_ug_rej_due_abis
tch_req_rej_due_etp_overload
call_setup_rej_due_etp_over
cssr_trai
tch_congestion_trai
time_of_amr_wb_calls
tch_requests_for_amr_wb
tch_seizures_for_amr_wb
tch_ended_transc_fail_codec_5
succ_change_amr_to_amr_wb
succ_change_amr_wb_to_amr
nbr_of_ul_fer_cl_gsm_hr_percent
nbr_of_ul_fer_cl_gsm_fr_percent
nbr_of_ul_fer_cl_efr_percent
nbr_of_ul_fer_cl_amr_hr_percent
nbr_of_ul_fer_cl_amr_fr_percent
nbr_of_ul_fer_cl_wb_amr_percent
nbr_of_ul_fer_cl_osc_dhr_percent
nbr_of_ul_fer_cl_osc_fr_percent
ava_1g
ava_1g_nom
ava_1g_denom
final_rtsl_down_due_to_flexi_auto_trx
ava_1g_denom_considering_auto_trx_shutdown
ava_1g_considering_auto_trx_shutdown
band_900_call_trf_6
band_900_traffic_trf_1
band_1800_call_trf_6
band_1800_traffic_trf_1
cssr_nps
tch_req_rej_due_to_tx_power
power_balancing_ho_requested
power_balancing_ho_req_rej
gprs_ter_ug_rej_due_lack_pow
tch_req_rej_lack
ave_used_tx_power
peak_used_tx_power
res_av_denom1
average_used_tx_power
band_900_tch_comp_rate
band_900_handover_success_rate
band_900_rx_qual_dl
band_900_rx_qual_ul
band_1800_tch_comp_rate
band_1800_handover_success_rate
band_1800_rx_qual_dl
band_1800_rx_qual_ul
band_1800_bts_name
band_900_bts_name
bcch_downtime
bcch_uptime
Also let me know how to set up Access's relationship tool. Thanks for help