PostgreSQL 8.3 ����� autovacuum �ݒ�
PostgreSQL 8.1 ����g����悤�ɂȂ��� autovacuum �ł��� 8.2 �܂ł� postgresql.conf �Ɏ��̂悤�ɐݒ肵�Ă��܂����B
# vi postgresql.conf
autovacuum = on stats_row_level = on
PostgreSQL 8.3 ����� autovacuum �� �f�t�H���g�� on �ɂȂ��Ă���̂� �ݒ肵�Ȃ��Ă��ǂ��̂ł����A �ݒ肷��ꍇ�́A stats_row_level �ł͂Ȃ� ���̂悤�� track_counts ��ݒ肷��悤�ɂȂ�܂����B �i stats_row_level ��ݒ肷��ƃG���[�ɂȂ�܂��j
autovacuum = on track_counts = on
