Greenplum简明使用手册.docx

GP服务启停su - gpadmingpstart #正常启动gpstop #正常关闭gpstop -M fast #快速关闭gpstop –r #重启gpstop –u #重新加载配置文件登陆与退出Greenplum#正常登陆psql gpdbpsql -d gpdb -h gphostm -p 5432 -U gpadmin#使用utility方式PGOPTIONS=-c gp_session_role=utility psql -h -d dbname hostname -p port#退出在psql命令行执行\q参数查询psql -c SHOW ALL; -d gpdbgpconfig --show max_connections创建数据库createdb -h localhost -p 5432 dhdw创建GP文件系统# 文件系统名gpfsdw# 子节点，视segment数创建目录mkdir -p /gpfsdw/seg1mkdir -p /gpfsdw/seg2chown -R gpadmin:gpadmin /gpfsdw# 主节点mkdir -p /gpfsdw/masterchown -R gpadmin:gpadmin /gpfsdwgpfilespace -o gpfilespace_configgpfilespace -c gpfilespace_config创建GP表空间psql gpdbcreate tablespace TBS_DW_DATA filespace gpfsdw;SET default_tablespace = TBS_DW_DATA;删除GP数据库gpdeletesystem -d /gpmaster/gpseg-1 -f查看segment配置select * from gp_segment_configuration;文件系统select * from pg_filespace_entry;磁盘、数据库空间SELECT * FROM gp_toolkit.gp_disk_free ORDER BY dfsegment;SELECT * FROM gp_toolkit.gp_size_of_database ORDER BY sodddatname;日志SELECT * FROM gp_toolkit.__gp_log_master_ext;SELECT * FROM gp_toolkit.__gp_log_segment_ext;表描述/d+ tablename表分析VACUUM ANALYZE tablename;表数据分布SELECT gp_segment_id, count(*) FROM table_name GROUP BY gp_segment_id;表占用空间SELECT relname as name, sotdsize/1024/1024 as size_MB, sotdtoastsize as toast, sotdadditionalsize as otherFROM gp_toolkit.gp_size_of_table_disk as sotd, pg_classWHERE sotd.sotdoid = pg_class.oid ORDER BY relname;索引占用空间SELECT soisize/1024/1024 as size_MB, relname as indexnameFROM pg_class, gp_toolkit.gp_size_of_indexWHERE pg_class.oid = gp_size_of_index.soioidAND pg_class.relkind=i;OBJECT的操作统计SELECT schemaname as schema, objname as table, usename as role, actionname as action, subtype as type, statime as timeFROM pg_stat_operationsWHERE objname = name;锁SELECT locktype, database, c.relname, l.relation, l.transactionid, l.transaction, l.pid, l.mode, l.granted, a.current_queryFROM pg_locks l, pg_class c, pg_stat_activity aWHERE l.relation=c.oidAND l.pid=a.procpidORDER BY c.relname;队列SELECT * FROM pg_resqueue_st