Possible-Operational-Problems-and-Solutions.md

+# Possible problems
+
+## Error `database is locked`
+
+If the error appears when creating a new experiment, then the culprit is `/esarchive/autosubmit/ecearth.db`. 
+
+To fix it, follow these instructions:
+
+`cd /esarchive/autosubmit/`
+
+`sqlite3 ecearth.db .dump > ecearth.db.dump`
+
+`mv ecearth.db ecearth.db~`
+
+`cat ecearth.dump | sqlite3 ecearth.db`
+
+`chmod 777 ecearth.db`
+
+Finally, you can delete the old database `ecearth.db~`.
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