[PostGIS] #6038: Using public.geometry_columns causes 'could not open relation with OID 188954716' after drop geometry tables

PostGIS trac at osgeo.org
Tue Jan 20 03:11:36 PST 2026


#6038: Using public.geometry_columns causes  'could not open relation with OID
188954716' after drop geometry tables
-------------------------------+---------------------
 Reporter:  Lars Aksel Opsahl  |      Owner:  pramsey
     Type:  defect             |     Status:  new
 Priority:  blocker            |  Milestone:
Component:  postgis            |    Version:  master
 Keywords:                     |
-------------------------------+---------------------
 I import the attached file to at database with postgis topology installed


 {{{
 pgtopo_import -f /tmp/test_data.gz gsk_utdata_25_784|psql t1
 }}}

 Then I create a new topology (may not be needed)

 {{{
 SELECT topology.createtopology('t1',4258);

 -- check that you have this the database

 SELECT * from topology.topology;
  id |       name        | srid | precision | hasz | useslargeids
 ----+-------------------+------+-----------+------+--------------
   3 | gsk_utdata_25_784 | 4258 |         0 | f    | f
   4 | t1                | 4258 |         0 | f    | f
 (2 rows)

 }}}

 The I close all sessions to database and start two new session and starts
 two transactions.

 Session 1

 {{{
 [local] lop at t1=# BEGIN;
 BEGIN
 [local] lop at t1=#
 }}}


 Session 2

 {{{
 [local] lop at t1=# BEGIN;
 BEGIN
 [local] lop at t1=#
 }}}

 Then in session one drop the imported topology schema

 {{{

 [local] lop at t1=# SELECT topology.droptopology('gsk_utdata_25_784');
 NOTICE:  00000: Dropping all layers from topology 'gsk_utdata_25_784' (3)
 LOCATION:  exec_stmt_raise, pl_exec.c:3925
 NOTICE:  00000: drop cascades to 8 other objects
 DETAIL:  drop cascades to table gsk_utdata_25_784.face
 drop cascades to table gsk_utdata_25_784.node
 drop cascades to table gsk_utdata_25_784.edge_data
 drop cascades to view gsk_utdata_25_784.edge
 drop cascades to sequence gsk_utdata_25_784.layer_id_seq
 drop cascades to table gsk_utdata_25_784.relation
 drop cascades to table gsk_utdata_25_784.edge_attributes
 drop cascades to table gsk_utdata_25_784.face_attributes
 LOCATION:  reportDependentObjects, dependency.c:1227
              droptopology
 --------------------------------------
  Topology 'gsk_utdata_25_784' dropped
 (1 row)

 }}}

 In session two run this command inside the transaction and this hangs for
 ever.

 {{{
 select SRID from public.geometry_columns where (f_table_schema = 't1') and
 f_table_name = 'edge_data' and f_geometry_column = 'geom';

 }}}

 Go back two session one run commit


 {{{
 [local] lop at t1=# commit;
 COMMIT
 [local] lop at t1=#

 }}}

 Go back to session two and you see this error message


 {{{
 ERROR:  XX000: could not open relation with OID 188955003
 LOCATION:  relation_open, relation.c:62

 }}}

 This is tested on different servers with configs


 {{{
 PostgreSQL 16.10 (Homebrew) on aarch64-apple-darwin23.6.0, compiled by
 Apple clang version 16.0.0 (clang-1600.0.26.6), 64-bit
 POSTGIS="3.7.0dev 3.6.0rc2-152-g19e25a659" [EXTENSION] PGSQL="160"
 GEOS="3.14.0-CAPI-1.20.4" PROJ="9.7.0 NETWORK_ENABLED=OFF
 URL_ENDPOINT=https://cdn.proj.org
 USER_WRITABLE_DIRECTORY=/Users/lop/Library/Application Support/proj
 DATABASE_PATH=/opt/homebrew/Cellar/proj/9.7.0/sharpr

 PostgreSQL 16.4 (Ubuntu 16.4-1.pgdg20.04+1) on x86_64-pc-linux-gnu,
 compiled by gcc (Ubuntu 9.4.0-1ubuntu1~20.04.2) 9.4.0, 64-bit


  POSTGIS="3.7.0dev 3.6.0rc2-284-g013e9b0fd" [EXTENSION] PGSQL="160"
 GEOS="3.14.0-CAPI-1.20.4" (compiled against GEOS 3.13.1) PROJ="8.2.1
 NETWORK_ENABLED=OFF URL_ENDPOINT=https://cdn.proj.org
 USER_WRITABLE_DIRECTORY=/var/lib/postgresql/.local/share/proj
 DATABASE_PATH=/usr/share/oj

 }}}
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/6038>
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