could not obtain lock on relation "@1@"This usually means that someone requested an ACCESS EXCLUSIVE lock on the table after the pg_dump parent process had gotten the initial ACCESS SHARE lock on the table.
[メッセージの意味]
[システムの処理]
[利用者の処置]
メッセージ本文から異常が発生した原因を調査し、原因を取り除いてください。