The updates are going to different tables within same DB file, here is a more detailed picture on the issue To make the bulk update and inserts efficient we drop index before write and create indexes after the write operation. Creating indexes takes about 10 to 15 seconds depending on the total record count. During this time we are not able to do any DB updates, DB seems to be locked for the whole duration. Please note that Index is getting created for Table 1 whereas we are doing 3 to 5 update queries on Table 2 which fails. Is there a way to run update queries while creating indexes? (on different tables within same DB file)