Cannot import logs from csv

Hello.

I've got a table set up on server B to store the logs from server A, as
outlined in
http://www.postgresql.org/docs/8.4/static/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-CSVLOG

The table is defined as follows:
postgres=# \d maincluster_log
Table "public.maincluster_log"
Column | Type | Modifiers
------------------------+-----------------------------+-----------
log_time | timestamp(3) with time zone |
user_name | text |
database_name | text |
process_id | integer |
connection_from | text |
session_id | text | not null
session_line_num | bigint | not null
command_tag | text |
session_start_time | timestamp with time zone |
virtual_transaction_id | text |
transaction_id | bigint |
error_severity | text |
sql_state_code | text |
message | text |
detail | text |
hint | text |
internal_query | text |
internal_query_pos | integer |
context | text |
query | text |
query_pos | integer |
location | text |
Indexes:
"pk_maincluster_log" PRIMARY KEY, btree (session_id, session_line_num)
"ix_maincluster_log_databasename" btree (database_name)
"ix_maincluster_log_logtime" btree (log_time) CLUSTER
"ix_maincluster_log_sessionstarttime" btree (session_start_time)
"ix_maincluster_log_username" btree (user_name)

Every day, I set \encoding SQL_ASCII on server B (server A is
SQL_ASCII) and use \copy with the csv flag to upload yesterday's log
file to the table. For months, this has worked flawlessly until 12th
October. The import failed with a message:
postgres=# \copy maincluster_log FROM maincluster-20131011.csv CSV
ERROR: extra data after last expected column
CONTEXT: COPY maincluster_log, line 424855: "2013-10-11 15:58:59.463
BST,"apachemitre","course_records",30875,"[local]",52581233.789b,3,"idle",20..."

The failing line, I will give at the end because it is long.

PostgreSQL version on both servers is 8.4, running on CentOS 6.3.

Please, does anyone have some insight into why this fails?

Helen Griffiths

Failing log line below this line:
2013-10-11 16:11:32.223
BST,"apachemitre","course_records",2335,"::1:33971",52581524.91f,3,"idle",2013-10-11
16:11:32 BST,1/57,0,LOG,00000,"statement: SELECT DISTINCT
tutbases.term_code AS term_code,
tb_groupmembers.student_id AS student_id,
length(tb_groupmembers.groupname) AS grouplen,
tb_groupmembers.groupname AS groupname,
tb_students.surname AS surname,
tb_students.initials AS initials,
tutbases.block AS block,
tt_sub_types.subtype AS subtype,
tt_sub_types.module_no AS modulecode,
tt_sub_types.type AS type,
tt_events.group_type AS grouptype,
tt_sub_types.long_name AS course
FROM
(tutbases INNER JOIN (((tb_options INNER JOIN tb_students
ON (tb_options.tutbase_id = tb_students.tutbase_id)
AND (tb_options.student_id = tb_students.student_id))
INNER JOIN tt_sub_types ON tb_options.module_no = tt_sub_types.module_no)
INNER JOIN tt_events ON (tt_sub_types.type = tt_events.type)
AND (tt_sub_types.subtype = tt_events.subtype))
ON (tutbases.term_code = tt_events.term_code)
AND (tutbases.block = tt_events.block)
AND (tutbases.id = tb_options.tutbase_id))
INNER JOIN tb_groupmembers
ON (tt_events.group_type = tb_groupmembers.grouptype)
AND (tb_options.student_id = tb_groupmembers.student_id)
AND (tb_options.tutbase_id = tb_groupmembers.tutbase_id)
AND (tutbases.id = tb_groupmembers.tutbase_id)
WHERE
(((tutbases.term_code)='201300')
AND ((tt_sub_types.subtype)='singa')
AND ((tt_sub_types.type)='T')

AND ((length(tb_groupmembers.subtype))=0)
AND ((tb_options.taken)='1')
AND ((tb_students.active)='1'))
UNION
SELECT DISTINCT
tutbases.term_code AS term_code,
tb_groupmembers.student_id AS student_id,
length(tb_groupmembers.groupname) AS grouplen,
tb_groupmembers.groupname AS groupname,
tb_students.surname AS surname,
tb_students.initials AS initials,
tutbases.block AS block,
tt_events.subtype AS subtype,
tt_sub_types.module_no AS modulecode,
tt_events.type AS type,
tb_groupmembers.grouptype AS grouptype,
tt_sub_types.long_name AS course
FROM
((((tutbases INNER JOIN tb_groupmembers
ON tutbases.id = tb_groupmembers.tutbase_id)
INNER JOIN tt_events ON (tb_groupmembers.grouptype = tt_events.group_type)
AND (tb_groupmembers.subtype = tt_events.subtype)
AND (tutbases.term_code = tt_events.term_code)
AND (tutbases.block = tt_events.block))
INNER JOIN tb_options ON (tb_groupmembers.student_id =
tb_options.student_id)
AND (tb_groupmembers.tutbase_id = tb_options.tutbase_id))
INNER JOIN tb_students ON (tb_options.student_id = tb_students.student_id)
AND (tb_options.tutbase_id = tb_students.tutbase_id))
INNER JOIN tt_sub_types ON (tt_events.type = tt_sub_types.type)
AND (tt_events.subtype = tt_sub_types.subtype)
AND (tb_options.module_no = tt_sub_types.module_no)
WHERE
(((tutbases.term_code)='201300')
AND ((tt_events.subtype)='singa')
AND ((tt_events.type)='T')
AND ((length(tb_groupmembers.groupname))>0)
AND ((tb_options.taken)='1')
AND ((tb_students.active)='1'))
UNION
SELECT DISTINCT
tutbases.term_code AS term_code,
tb_groupmembers.student_id AS student_id,
length(tb_groupmembers.groupname) AS grouplen,
tb_groupmembers.groupname AS groupname,
tb_students.surname AS surname,
tb_students.initials AS initials,
tutbases.block AS block,
tt_sub_types.subtype AS subtype,
tt_sub_types.module_no AS modulecode,
tt_sub_types.type AS type,
tb_groupmembers.grouptype AS grouptype,
tt_sub_types.long_name AS course
FROM
((((tutbases INNER JOIN tb_groupmembers
ON tutbases.id = tb_groupmembers.tutbase_id)
INNER JOIN tb_options ON (tb_groupmembers.student_id =
tb_options.student_id)
AND (tb_groupmembers.tutbase_id = tb_options.tutbase_id))
INNER JOIN tb_students ON (tb_options.student_id = tb_students.student_id)
AND (tb_options.tutbase_id = tb_students.tutbase_id))
INNER JOIN tt_sub_types ON tb_options.module_no = tt_sub_types.module_no)
INNER JOIN tt_events ON (tt_sub_types.subtype = tt_events.subtype)
AND (tt_sub_types.type = tt_events.type)
AND (tutbases.block = tt_events.block)
AND (tutbases.term_code = tt_events.term_code)
AND (tb_groupmembers.grouptype = tt_events.group_type)
WHERE
(((tutbases.term_code)='201300')
AND ((length(tb_groupmembers.groupname))>0)
AND ((tt_sub_types.subtype)='singa')
AND ((tt_sub_types.type)='T')
AND ((tb_groupmembers.grouptype)='TM')
AND ((tb_options.taken)='1')
AND ((tb_students.active)='1')
AND ((length(tb_groupmembers.subtype))=0))
ORDER BY
surname,
initials,
grouplen,
groupname",,,,,,,,