Database	Used by
`LosaGame`	game data and accounts (DB agent `ls_dbagent_game`)
`LosaGame_log`	game-side logs, written by procedures in `LosaGame`
`LosaLogData`	log server data (DB agent `ls_dbagent_logdb`)
`Backup`	stays empty: game procedures such as `game_practice_rank_reward` and `game_region_backup_point` create their own tables in it

The schema is the 2021 release's full scripts. The 2019 release's own scripts (sql\20120504 + the patches in DB\) are a 2012 base and lack 212 of the 401 procedures the 2019 server calls; the 2021 schema matches all but a few, which 07_losadev_2019_procs.sql adds (game_member_count, game_member_add, game_create_nickname, game_pingpong, the Indonesia game_game_get_data).

Tested 2026-11-07 on SQL Server 2022 Express: every script runs without an error; LosaGame has 134 tables / 1065 procedures, LosaGame_log 20 / 2, LosaLogData 67 / 81; both logins connect, the game login can create tables in Backup; backup and restore of all four work.

Needs

SQL Server 2019 or newer (Express is enough) with SQL Server and Windows authentication (mixed mode).
sqlcmd on PATH.
Recommended: instance collation Korean_Wansung_CI_AS, like the original service.

Setup

setup-db.bat .\SQLEXPRESS

It asks for the DB agent password (SQL logins lstggame and lstglog; put it in PW= of the ls_dbagent.ini files in server-config\) and the encode key (15 characters, define_encode_key). set DB_COLLATE=Korean_Wansung_CI_AS before running forces a collation. Logs go to logs\.

Script	Does
`00_create_databases.sql`	creates `LosaGame`, `LosaGame_log`, `LosaLogData`, `Backup`
`01_logins.sql`	SQL logins `lstggame`, `lstglog`
`02_LosaGame_log.sql`, `03_LosaLogData.sql`, `04_LosaGame.sql`	the 2021 release schema (only the `CREATE DATABASE` block taken out)
`05_users.sql`	`db_owner` users for the logins
`06_encode_key.sql`	the encode key
`07_losadev_2019_procs.sql`	the procedures the 2019 server needs on top of the 2021 schema
`08_first_tournament.sql`	the first tournament row (Faction / LS Cup screens)
`optional\test-accounts.sql`	test accounts `tester1` and `gmtest1` (Indonesia IDs need 6-12 characters), run by hand

Backup and restore

backup.bat D:\LosaBackup .\SQLEXPRESS
restore.bat 20261107_1400 D:\LosaBackup .\SQLEXPRESS

backup.bat writes <database>_<yyyyMMdd_HHmm>.bak for all four databases (online). restore.bat asks first and replaces all four: stop every server before restoring. It restores to the paths stored in the backup (same server); on another server use RESTORE DATABASE ... WITH MOVE by hand.