Hello Susan,
while updating to 1.6 did you get some errors like that:
psql:database_schema_15-16.sql:105: ERROR: constraint
"community2collection_collection_id_fkey" of relation
"community2collection" does not exist
ALTER TABLE
psql:database_schema_15-16.sql:108: ERROR: constraint
"community2community_child_comm_id_fkey" of relation
"community2community" does not exist
ALTER TABLE
psql:database_schema_15-16.sql:111: ERROR: constraint
"collection2item_item_id_fkey" of relation "collection2item" does not exist
If so, inspect your database and use the references for the foreign keys
to delete them, e.g::
psql [YourDBName]
\d [TableName]
will show you the foreign keys, e.g.:
\d community2collection
Table "public.community2collection"
Column | Type | Modifiers
---------------+---------+-----------
id | integer | not null
community_id | integer |
collection_id | integer |
Indexes:
"community2collection_pkey" PRIMARY KEY, btree (id)
"community2collection_collection_id_idx" btree (collection_id)
"community2collection_community_id_idx" btree (community_id)
Foreign-key constraints:
"$1" FOREIGN KEY (community_id) REFERENCES community(community_id)
"$2" FOREIGN KEY (collection_id) REFERENCES collection(collection_id)
In that case you got to run:
ALTER TABLE collection2item DROP CONSTRAINT "$2";
ALTER TABLE community2community DROP CONSTRAINT "$2";
ALTER TABLE community2collection DROP CONSTRAINT "$2";
The reason for this is:
In Step 7 Update the database it can happen that not all the commands in
the database_schema_15-16.sql are executed properly.
The commands to drop foreign keys:
ALTER TABLE collection2item DROP CONSTRAINT collection2item_item_id_fkey;
ALTER TABLE community2community DROP CONSTRAINT
community2community_child_comm_id_fkey;
ALTER TABLE community2collection DROP CONSTRAINT
community2collection_collection_id_fkey;
assume that the keys got default names, whereas depending on the
database version and operating system on which your instance started,
they can have no names and just be counted internally.
If you got no names or other names the script will skip the commands,
with the above mentioned ERROR.
This will lead to errors running DSpace as now 2 contraints exist and
one is unable to delete items, collections etc.
Hope that helps
Claudia Jürgen
Am 01.02.2012 20:46, schrieb Thornton, Susan M. (LARC-B702)[LITES]:
> Hello,
> After recently upgrading from DSpace 1.5.1 to 1.7.1, we are getting the
> following error whenever we try to delete an Item online:
>
> 2012-02-01 14:40:17,883 WARN org.dspace.app.webui.servlet.DSpaceServlet @
> [email protected]:session_id=B6C011F3369B678E2FB9ED4B0050:ip_addr=999.99.99.999:database_error:org.postgresql.util.PSQLException\colon;
> ERROR\colon; update or delete on table "item" violates foreign key
> constraint "$2" on table "collection2item"
> Detail\colon; Key (item_id)=(429349) is still referenced from table
> "collection2item".
> org.postgresql.util.PSQLException: ERROR: update or delete on table "item"
> violates foreign key constraint "$2" on table "collection2item"
> Detail: Key (item_id)=(429349) is still referenced from table
> "collection2item".
>
>
> I found some old dspace-tech postings regarding this error and am wondering
> if the recommended fix is correct?
>
> Not sure how this one happened: after upgrading to dspace 1.6, we're having
> trouble deleting items from dspace. We get an error message explaining that
> 'update or delete on "item" violates foreign key constraint "$2" on
> "collection2item"'. Describing collection2item yields:
>
> Table "public.collection2item"
> Column | Type | Modifiers
> ---------------+---------+-----------
> id | integer | not null
> collection_id | integer |
> item_id | integer |
> Indexes:
> "collection2item_pkey" PRIMARY KEY, btree (id)
> "collection2item_collection_idx" btree (collection_id)
> "collection2item_item_id_idx" btree (item_id)
> Foreign-key constraints:
> "$1" FOREIGN KEY (collection_id) REFERENCES collection(collection_id)
> "$2" FOREIGN KEY (item_id) REFERENCES item(item_id)
> "coll2item_item_fk" FOREIGN KEY (item_id) REFERENCES item(item_id)
> DEFERRABLE
>
> I ran the database scheme update script, and it seems to have added the final,
> deferrable foreign key constraint; but I can't find any reference at all to
> the
> first two FKCs ($1 and $2). As far as I can tell, they aren't supposed to
> exist at all; I assume they're left over from some previous version of dspace,
> didn't get removed at some point in the past, and just never caused problems
> until now. Can anybody confirm that I can go ahead and drop these constraints
> (and similar constraints in Community2Collection?
>
> Bill Anderson
> Software Developer
> Digital Library Development
> Georgia Tech Library
>
> Thanks in advance!
> Sue
>
> Sue Walker-Thornton
> Software Developer/Database Administrator
> NASA Langley Research Center - LITES Contract
> [email protected]
> (W) 757-864-2368
> (M) 757-506-9903
>
>
>
>
>
> ------------------------------------------------------------------------------
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--
Claudia Juergen
Universitaetsbibliothek Dortmund
Eldorado
0231/755-4043
https://eldorado.tu-dortmund.de/
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