docs: need to index after updating with a file

Fixes #2031.

diff --git a/docs/admin/Advanced-Installations.md b/docs/admin/Advanced-Installations.md
index 7ff5619824674af87c74f9f5a036b286f61eb5ac..5b0275b32728ea445e102ddf3eb799f09a672143 100644 (file)
--- a/docs/admin/Advanced-Installations.md
+++ b/docs/admin/Advanced-Installations.md
@@ -51,7 +51,8 @@ The file `import_multiple_regions.sh` needs to be edited as per your requirement
 !!! tip
     If your database already exists and you want to add more countries, replace the setting up part
     `${SETUPFILE} --osm-file ${UPDATEDIR}/tmp/combined.osm.pbf --all 2>&1`
-    with `${UPDATEFILE} --import-file ${UPDATEDIR}/tmp/combined.osm.pbf 2>&1`.
+    with `${UPDATEFILE} --import-file ${UPDATEDIR}/tmp/combined.osm.pbf --index --index-instances N 2>&1`
+    where N is the numbers of CPUs in your system.
 
 ### Setting up multiple regions