The Catalog Schema seems not to be actualized when using ALTER Table.
I had reported a problem with adding NEW tables, which was corrected by
Hiroshi
<a href="http://postgresql.1045698.n5.nabble.com/SQLDescribeCol-schema-cache-not-being-updated-completely-tt4372956.html" title="http://postgresql.1045698.n5.nabble.com/SQLDescribeCol-schema-cache-not-being-updated-completely-tt4372956.html">http://postgresql.1045698.n5.nabble.com/SQLDescribeCol-schema-cache-not-...</a>
<a href="http://postgresql.1045698.n5.nabble.com/Error-Retrieving-Catalog-Info-tt4598955.html" title="http://postgresql.1045698.n5.nabble.com/Error-Retrieving-Catalog-Info-tt4598955.html">http://postgresql.1045698.n5.nabble.com/Error-Retrieving-Catalog-Info-tt...</a>
When "altering" a Datatype of column the problem still exists:
Say, we have a column which is defined as varchar(40)
Now we want to double the field length to varchar(80)
ALTER TABLE customer
ALTER COLUMN address TYPE varchar(80),
Whe