You need to create all required tables and load initial configuration. This can be done with "nxdbmgr init path_to_sql_file" command, for example:
nxdbmgr init /opt/netxms/share/netxms/sql/dbinit_pgsql.sql
You need to change path (/opt/netxms/share/netxms/sql/) to conform your installation, and please note, that file name is different for different database types:
AirAlk:~() $ ls -l /opt/netxms/share/netxms/sql/dbinit_*.sql
-rw-r--r-- 1 alk admin 120673 Jun 22 22:17 /opt/netxms/share/netxms/sql/dbinit_db2.sql
-rw-r--r-- 1 alk admin 119910 Jun 22 22:17 /opt/netxms/share/netxms/sql/dbinit_mssql.sql
-rw-r--r-- 1 alk admin 112856 Jun 22 22:17 /opt/netxms/share/netxms/sql/dbinit_mysql.sql
-rw-r--r-- 1 alk admin 120498 Jun 22 22:17 /opt/netxms/share/netxms/sql/dbinit_oracle.sql
-rw-r--r-- 1 alk admin 117540 Jun 22 22:17 /opt/netxms/share/netxms/sql/dbinit_pgsql.sql
-rw-r--r-- 1 alk admin 118248 Jun 22 22:17 /opt/netxms/share/netxms/sql/dbinit_sqlite.sql
In your case, most likely command will be
nxdbmgr init /usr/share/netxms/sql/dbinit_sqlite.sql
NB! We strongly suggest not to use SQLite for anything than testing or development