In middle of the bash script next job/code takes time to trigger if first is completed

I have a script which have my codes:

# scheduling details for abc.sas, first status check after 1 hr , status check interval is 30 mins
execute "claimant.sas"
echo "execute function done for abc.sas"

execution_check "ERA_abc" "3600"

status_check "ERA_abc" "abc.log" "1800" "abc.sas" "3600"
echo "status check done for abc.sas"
echo
echo

# scheduling details for dce.sas, first status check after 1 hr , status check interval is 30 mins
execute "dce.sas"
echo "execute function done for dce.sas"

execution_check "ERA_dce" "3600"

status_check "ERA_dce" "dce.log" "1800" "dce.sas" "3600"
echo "status check done for dce.sas"
echo
echo

......

now my problem is once i trigger my bash script so ERA_abc starts to run once its get completed ERA_dce should run immediately but it sometimes take an hour to get trigger ? can you help me to know the reason and solution ? Thanks