PostgreSQL日常所需要的相关操作

Posted 2023-03-07

记录下postgresql相关操作 一天一次 ANALYZE tb_events_col;

一周一次 VACUUM FULL

查询正在运行的任务 select * from pg_stat_activity where current_query!=<IDLE>

insert into oss_tb_events_202001_w select * from tb_events_col where start_time >= 2020-01-01::timestamp and start_time < 2020-02-01::timestamp;

insert into oss_tb_events_202002_w select * from tb_events_col_202002;

TRUNCATE tb_events_col_202002

select pg_terminate_backend(32789);

SELECT * FROM pg_stat_activity where current_query !=<IDLE>;

select pg_size_pretty(pg_total_relation_size(tb_events_col));

ANALYZE tb_events_col_202002

VACUUM tb_events_col_202002

VACUUM FULL tb_anchor_fans_col

select oid, relname from pg_class where relname =tb_anchor_fans_col; select * from gp_toolkit.gp_bloat_expected_pages where btdrelid =40653 select * from gp_toolkit.__gp_aovisimap_compaction_info(tb_anchor_fans_col::regclass);

select oid, relname from pg_class where relname =tb_fans_col; select * from gp_toolkit.gp_bloat_expected_pages where btdrelid =40604 select * from gp_toolkit.__gp_aovisimap_compaction_info(tb_anchor_fans_col::regclass); SELECT * FROM pg_stat_activity where current_query !=<IDLE>; show gp_appendonly_compaction_threshold

TRUNCATE TABLE tb_anchor_fans_col_bak

select pg_size_pretty(pg_relation_size(user_access_path)); select pg_size_pretty(pg_total_relation_size(tb_events_col));

VACUUM FULL tb_events_col ANALYZE tb_events_col_202003

delete from tb_events_col where id in ( SELECT id FROM tb_events_col where start_time < 2020-03-01::timestamp)

select gp_execution_dbid(),pg_size_pretty(pg_total_relation_size(tb_events_col))from gp_dist_random(gp_id);

杀logstash进程 initctl stop logstash