1 # Troubleshooting Nominatim Installations
5 ### Can a stopped/killed import process be resumed?
7 "I accidentally killed the import process after it has been running for many hours. Can it be resumed?"
9 It is possible if the import already got to the indexing stage.
10 Check the last line of output that was logged before the process
11 was killed. If it looks like this:
14 Done 844 in 13 @ 64.923080 per second - Rank 26 ETA (seconds): 7.886255
16 then you can resume with the following command:
19 nominatim import --continue indexing
22 If the reported rank is 26 or higher, you can also safely add `--index-noanalyse`.
25 ### PostgreSQL crashed "invalid page in block"
27 Usually serious problem, can be a hardware issue, not all data written to disc
28 for example. Check PostgreSQL log file and search PostgreSQL issues/mailing
31 If it happened during index creation you can try rerunning the step with
34 nominatim import --continue indexing
37 Otherwise it's best to start the full setup from the beginning.
40 ### PHP "open_basedir restriction in effect" warnings
42 PHP Warning: file_get_contents(): open_basedir restriction in effect.
44 You need to adjust the
45 [open_basedir](https://www.php.net/manual/en/ini.core.php#ini.open-basedir)
46 setting in your PHP configuration (`php.ini` file). By default this setting may
49 open_basedir = /srv/http/:/home/:/tmp/:/usr/share/pear/
51 Either add reported directories to the list or disable this setting temporarily
52 by adding ";" at the beginning of the line. Don't forget to enable this setting
53 again once you are done with the PHP command line operations.
56 ### PHP timezeone warnings
58 The Apache log may contain lots of PHP warnings like this:
59 `PHP Warning: date_default_timezone_set() function.`
61 You should set the default time zone as instructed in the warning in
62 your `php.ini` file. Find the entry about timezone and set it to
65 ; Defines the default timezone used by the date functions
66 ; https://php.net/date.timezone
67 date.timezone = 'America/Denver'
72 echo "date.timezone = 'America/Denver'" > /etc/php.d/timezone.ini
75 ### nominatim.so version mismatch
77 When running the import you may get a version mismatch:
78 `COPY_END for place failed: ERROR: incompatible library "/srv/Nominatim/nominatim/build/module/nominatim.so": version mismatch`
80 pg_config seems to use bad includes sometimes when multiple versions
81 of PostgreSQL are available in the system. Make sure you remove the
82 server development libraries (`postgresql-server-dev-13` on Ubuntu)
83 and recompile (`cmake .. && make`).
86 ### I see the error "ERROR: permission denied for language c"
88 `nominatim.so`, written in C, is required to be installed on the database
89 server. Some managed database (cloud) services like Amazon RDS do not allow
90 this. There is currently no work-around other than installing a database
91 on a non-managed machine.
94 ### I see the error: "function transliteration(text) does not exist"
96 Reinstall the nominatim functions with `nominatim refresh --functions`
97 and check for any errors, e.g. a missing `nominatim.so` file.
99 ### I see the error: "ERROR: mmap (remap) failed"
101 This may be a simple out-of-memory error. Try reducing the memory used
102 for `--osm2pgsql-cache`. Also make sure that overcommitting memory is
103 allowed: `cat /proc/sys/vm/overcommit_memory` should print 0 or 1.
105 If you are using a flatnode file, then it may also be that the underlying
106 filesystem does not fully support 'mmap'. A notable candidate is virtualbox's
109 ### nominatim UPDATE failed: ERROR: buffer 179261 is not owned by resource owner Portal
111 Several users [reported this](https://github.com/openstreetmap/Nominatim/issues/1168)
112 during the initial import of the database. It's
113 something PostgreSQL internal Nominatim doesn't control. And PostgreSQL forums
114 suggest it's threading related but definitely some kind of crash of a process.
115 Users reported either rebooting the server, different hardware or just trying
116 the import again worked.
118 ### The website shows: "Could not get word tokens"
120 The server cannot access your database. Add `&debug=1` to your URL
121 to get the full error message.
124 ### Website reports "DB Error: insufficient permissions"
126 The user the webserver, e.g. Apache, runs under needs to have access to the
127 Nominatim database. You can find the user like
128 [this](https://serverfault.com/questions/125865/finding-out-what-user-apache-is-running-as),
129 for default Ubuntu operating system for example it's `www-data`.
131 1. Repeat the `createuser` step of the installation instructions.
133 2. Give the user permission to existing tables
136 GRANT usage ON SCHEMA public TO "www-data";
137 GRANT SELECT ON ALL TABLES IN SCHEMA public TO "www-data";
140 ### Website reports "Could not load library "nominatim.so"
142 Example error message
145 SELECT make_standard_name('3039 E MEADOWLARK LN') [nativecode=ERROR: could not
146 load library "/srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so":
147 /srv/nominatim/Nominatim-3.1.0/build/module/nominatim.so: cannot open shared
148 object file: Permission denied
149 CONTEXT: PL/pgSQL function make_standard_name(text) line 5 at assignment]
152 The PostgreSQL database, i.e. user `postgres`, needs to have access to that file.
154 The permission need to be read & executable by everybody, but not writeable
158 -rwxr-xr-x 1 nominatim nominatim 297984 build/module/nominatim.so
161 Try `chmod a+r nominatim.so; chmod a+x nominatim.so`.
163 When you recently updated your operating system, updated PostgreSQL to
164 a new version or moved files (e.g. the build directory) you should
165 recreate `nominatim.so`. Try
170 cmake $main_Nominatim_path && make
173 ### Setup.php fails with "DB Error: extension not found"
175 Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.
176 See the installation instructions for a full list of required packages.
179 ### I forgot to delete the flatnodes file before starting an import.
181 That's fine. For each import the flatnodes file get overwritten.
182 See [https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage](https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage)
183 for more information.
186 ## Running your own instance
188 ### Can I import negative OSM ids into Nominatim?
190 See [this question of Stackoverflow](https://help.openstreetmap.org/questions/64662/nominatim-flatnode-with-negative-id).