Add notes for 2016-04-19

content/2016-04.md

@@ -226,3 +226,27 @@ javax.ws.rs.WebApplicationException
 
 - Everything else in the system looked normal (50GB disk space available, nothing weird in dmesg, etc)
 - After restarting Tomcat a few more of these errors were logged but the application was up
+
+## 2016-04-19
+
+- Get handles for items that are using a given metadata field, ie `dc.Species.animal` (105):
+
+```
+# select handle from item, handle where handle.resource_id = item.item_id AND item.item_id in (select resource_id from metadatavalue where resource_type_id=2 and metadata_field_id=105);
+   handle
+-------------
+ 10568/10298
+ 10568/16413
+ 10568/16774
+ 10568/34487
+```
+
+- Delete metadata values for `dc.GRP` and `dc.icsubject.icrafsubject`:
+
+```
+# delete from metadatavalue where resource_type_id=2 and metadata_field_id=96;
+# delete from metadatavalue where resource_type_id=2 and metadata_field_id=83;
+```
+
+- They are old ICRAF fields and we haven't used them since 2011 or so
+- Also delete them from the metadata registry