[pgsql-jp: 38983] PG_DUMP 時にエラー

[y-sugita ＠ cnt.mpd.nec.co.jp]

こんにちは杉田と申します
いつも参考にさせて頂いております

PG_DUMPを実行したところ下記のエラーの発生するようになりました。
原因及び対処方法をお教えください。
 
環境：バージョンは7.4.9
　　　OS: Linux 2.4.21-32.ELsmp

■実行コマンド
/usr/local/pgsql/bin/pg_dump -b -F c mail > /crmhome/bs/backup/mail.dmp

■エラーメッセージ
pg_dump: ERROR:  canceling query due to user request
pg_dump: SQL command to dump the contents of table "tbcsmessage" failed: PQendcopy() failed.
pg_dump: Error message from server: ERROR:  canceling query due to user request
pg_dump: The command was: COPY public.tbcsmessage (dimessid, dicsmatid, dimsgtype, dsname, dskana, dstel, dscustid, dica
mpid, dsprep, dsren, dselim, diprepusr, direnusr, dielimflg, dsheader, dsubject, dsfrom, dsto, dscc, dsbody, dscstprep, 
dscompany, ditrash, recid, diusrid, diauther, dsbcc, didraft, dimailauthid, diwaitaprvlno, option001, option002, option0
03, option004, option005, option006, option007, option008, option009, option010, option011, option012, option013, option
014, option015, option016, option017, option018, option019, option020, option021, option022, option023, option024, optio
n025, option026, option027, option028, option029, option030, option031, option032, option033, option034, option035, opti
on036, option037, option038, option039, option040, option041, option042, option043, option044, option045, option046, opt
ion047, option048, option049, option050, option051, option052, option053, option054, option055, option056, option057, op
tion058, option059, option060, option061, option062, option063, option064, option065, option066, option067, option068, o
ption069, option070, option071, option072, option073, option074, option075, option076, option077, option078, option079, 
option080, option081, option082, option083, option084, option085, option086, option087, option088, option089, option090,
 option091, option092, option093, option094, option095, option096, option097, option098, option099, option100, distatid4
matter, diauther4matter, digroupid4matter, dicateid4matter, dimpdeg4matter, diclaim4matter, direquest4matter, dilatestms
gflg, dsrawheader, dsmail) TO stdout;

以上、よろしくお願いいたします