diff --git a/source/resources/apps/postgres-xl/README.md b/source/resources/apps/postgres-xl/README.md
index 63d6742..18f7c5e 100644
--- a/source/resources/apps/postgres-xl/README.md
+++ b/source/resources/apps/postgres-xl/README.md
@@ -208,3 +208,27 @@ XXX increase fileno (open files) limit
 * soft nofile 8192
 * hard nofile 8192
 
+
+# ERROR
+
+Many:
+ERROR:  Unique index of distributed table must contain the hash distribution column.
+
+
+Many like:
+2018-11-27 15:51:23.636 MST [1114] ERROR:  canceling autovacuum task
+2018-11-27 15:51:23.636 MST [1114] CONTEXT:  automatic analyze of table "ao_odoo.public.stock_quant"
+
+
+2018-11-27 15:52:36.257 MST [988] LOG:  checkpoints are occurring too frequently (26 seconds apart)
+2018-11-27 15:52:36.257 MST [988] HINT:  Consider increasing the configuration parameter "max_wal_size".
+
+
+
+2018-11-27 15:53:20.026 MST [3020] ERROR:  Hash/Modulo distribution column does not refer to hash/modulo distribution column in referenced table.
+2018-11-27 15:53:20.026 MST [3020] STATEMENT:  ALTER TABLE ONLY public.account_tax_template
+	    ADD CONSTRAINT account_tax_template_company_id_fkey FOREIGN KEY (company_id) REFERENCES public.res_company(id) ON DELETE SET NULL;
+
+
+After uploading the odoo database, it ended and hung on this forever. The datanode's postgres was hitting CPU.
+REFRESH MATERIALIZED VIEW