greenplum常用运维命令

greenplum常用运维命令
适用于greenplum-6.0.0以上版本
文章目录
greenplum常用运维命令
元数据
查看所有表基本信息
查看表索引信息
查询表的所有列信息
查看哪些表是AO表哪些是HEAP表
查看AO表的分布键
查看分区表信息
修改表字段类型
数据运维
启动和停止Greenplum数据库
节点情况
greenplum总体运行状态
查看segment节点状态
查看segment节点故障等历史信息
检查segment instance同步状态
查看segment节点磁盘空闲情况
检查standby同步状态
检查数据库日志
显示在系统表中被标记为掉线的Segment的信息
系统情况
检查OS的日志中是否有出错告警
检查/tmp目录空间使用率
检查GP数据目录空间使用率
检查Raid卡状态
检查磁盘
OS关键目录剩余空间监控
检查RAID卡电池状态
时钟同步情况
Hosts文件检查
系统参数核查
其他
查看正在执行的SQL进程
Kill正在执行的SQL进程
资源队列检查
查看greenplum资源队列状态
查看greemplum资源队列锁
查看greemplum资源队列优先级
表数据重新分布
查看数据库使用容量
查看表容量
查看表是否需要ANALYZE
收集统计分析信息 ANALYZE TABLE_NAME
查看表膨胀情况
查看数据分布和倾斜情况
SQL执行时间检查
数据增长状态
Statistics 状态检查
数据库参数核查
重新建立数据库目录的索引
备份和导入导出
并发数据备份
并发数据恢复
COPY方式导出数据
导出数据带表头
导出数据不带表头
copy导入数据
元数据
查看所有表基本信息
所有表信息，不包含分区表的子表
SELECT
psut.relid,
psut.relname,
psut.schemaname
FROM
pg_statio_user_tables psut
LEFT JOIN pg_inherits pi ON psut.relid = pi.inhrelid
WHERE
schemaname = 'public'
AND pi.inhparent IS NULL
ORDER BY 2

所有表信息，包含分区表的子表
SELECT
psut.relid,
psut.relname,
psut.schemaname
FROM
pg_statio_user_tables psut
LEFT JOIN pg_inherits pi ON psut.relid = pi.inhrelid
WHERE
schemaname = 'public'
-- AND pi.inhparent IS NULL
ORDER BY 2

查看表索引信息
包含索引的名称和索引的SQL定义语句。

查看所有表的索引信息
SELECT
A.SCHEMANAME,
A.TABLENAME,
A.INDEXNAME,
A.TABLESPACE,
A.INDEXDEF,
B.AMNAME,
C.INDEXRELID,
C.INDNATTS,
C.INDISUNIQUE,
C.INDISPRIMARY,
C.INDISCLUSTERED,
D.DESCRIPTION
FROM
PG_AM B
LEFT JOIN PG_CLASS F ON B.OID = F.RELAM
LEFT JOIN PG_STAT_ALL_INDEXES E ON F.OID = E.INDEXRELID
LEFT JOIN PG_INDEX C ON E.INDEXRELID = C.INDEXRELID
LEFT OUTER JOIN PG_DESCRIPTION D ON C.INDEXRELID = D.OBJOID,
PG_INDEXES A
WHERE
A.SCHEMANAME = E.SCHEMANAME
AND A.TABLENAME = E.RELNAME
AND A.INDEXNAME = E.INDEXRELNAME
AND E.SCHEMANAME = 'public'



查看单表的索引信息
SELECT
A.SCHEMANAME,
A.TABLENAME,
A.INDEXNAME,
A.TABLESPACE,
A.INDEXDEF,
B.AMNAME,
C.INDEXRELID,
C.INDNATTS,
C.INDISUNIQUE,
C.INDISPRIMARY,
C.INDISCLUSTERED,
D.DESCRIPTION
FROM
PG_AM B
LEFT JOIN PG_CLASS F ON B.OID = F.RELAM
LEFT JOIN PG_STAT_ALL_INDEXES E ON F.OID = E.INDEXRELID
LEFT JOIN PG_INDEX C ON E.INDEXRELID = C.INDEXRELID
LEFT OUTER JOIN PG_DESCRIPTION D ON C.INDEXRELID = D.OBJOID,
PG_INDEXES A
WHERE
A.SCHEMANAME = E.SCHEMANAME
AND A.TABLENAME = E.RELNAME
AND A.INDEXNAME = E.INDEXRELNAME
AND E.SCHEMANAME = 'public'
AND E.RELNAME = 'table_name';


查询表的所有列信息
查看单表的列信息
SELECT * FROM information_schema.columns WHERE table_schema = 'public' AND table_name = 'table_name';

查看单表列名称，逗号分隔
SELECT string_agg(column_name, ',') FROM information_schema.columns WHERE table_schema = 'public' AND table_name = 'table_name';

查看所有表的列信息
SELECT * FROM information_schema.columns WHERE table_schema = 'public' ;

查看所有表的列名称，逗号分隔
SELECT string_agg(column_name, ','),table_name FROM information_schema.columns WHERE table_schema = 'public' GROUP BY 2;

查看哪些表是AO表哪些是HEAP表
查询某个表是否为AO表，查询出来有记录就为AO表，无记录就是HEAP表
SELECT relid::regclass table_name,compresslevel,compresstype,columnstore FROM pg_appendonly WHERE relid::regclass = 'bm_acct_loan'::regclass;

查询所有AO表信息
SELECT relid::regclass table_name,* FROM pg_appendonly;

查看AO表的分布键
查询所有表的分布键
SELECT
att.attname distributed_str,
gpdp.localoid::regclass table_name
FROM
gp_distribution_policy gpdp,
pg_attribute att,
pg_class pg,
pg_namespace pn
WHERE pg.oid = gpdp.localoid
AND pn.oid = pg.relnamespace
AND gpdp.localoid = att.attrelid
AND att.attnum = any(gpdp.distkey)
AND pn.nspname = 'public';

查询所有表的分布键，逗号分隔
SELECT
string_agg(att.attname,',') distributed_str,
gpdp.localoid::regclass table_name
FROM gp_distribution_policy gpdp,
pg_attribute att,
pg_class pg,
pg_namespace pn
WHERE pg.oid = gpdp.localoid
ANd pn.oid = pg.relnamespace
AND gpdp.localoid = att.attrelid
AND att.attnum = any(gpdp.distkey)
AND pn.nspname = 'public'
GROUP BY 2;

查看分区表信息
查看某个分区表的信息
SELECT
tablename,
partitiontablename,
partitiontype,
partitionboundary
FROM
pg_partitions
WHERE
tablename = 'table_name'
ORDER BY
partitionboundary DESC;

修改表字段类型
# 修改类型为 numeric(10,2)
ALTER TABLE "public”.table_name ALTER COLUMN column_name TYPE numeric(10,2) USING column_name::numeric(10,2);

# 修改类型为 INT
alter table "member" alter COLUMN imgfileid type int using imgfileid::int ;


数据运维
启动和停止Greenplum数据库
启动Greenplum数据库
gpstart

重新启动Greenplum数据库，停止Greenplum数据库系统，然后重新启动它。
gpstop -r

仅重新加载配置文件更改，将更改重新加载到Greenplum数据库配置文件，而不会中断系统。
gpstop -u

在维护模式下启动主机，仅启动主服务器以执行维护或管理任务，而不会影响段上的数据。
gpstart -m

停止Greenplum数据库
gpstop

要以快速模式停止Greenplum数据库
gpstop -M fast

节点情况
greenplum总体运行状态
[gpadmin@VM01 ~]$ gpstate

20200605:14:24:58:016044 gpstate:VM01:gpadmin-[INFO]:-Starting gpstate with args:
20200605:14:24:58:016044 gpstate:VM01:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 6.0.0 build commit:a2ff2fc318c327d702e66ab58ae4aff34c42296c'
20200605:14:24:58:016044 gpstate:VM01:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 9.4.24 (Greenplum Database 6.0.0 build commit:a2ff2fc318c327d702e66ab58ae4aff34c42296c) on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 6.4.0, 64-bit compiled on Sep 4 2019 01:12:33'
20200605:14:24:58:016044 gpstate:VM01:gpadmin-[INFO]:-Obtaining Segment details from master...
20200605:14:24:58:016044 gpstate:VM01:gpadmin-[INFO]:-Gathering data from segments...
gpadmin@vm01's password: .
.
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:-Greenplum instance status summary
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:-----------------------------------------------------
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Master instance = Active
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Master standby = No master standby configured
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total segment instance count from metadata = 2
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:-----------------------------------------------------
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Primary Segment Status
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:-----------------------------------------------------
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total primary segments = 2
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total primary segment valid (at master) = 2
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total primary segment failures (at master) = 0
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number of postmaster.pid files missing = 0
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number of postmaster.pid files found = 2
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number of postmaster.pid PIDs missing = 0
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number of postmaster.pid PIDs found = 2
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number of /tmp lock files missing = 0
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number of /tmp lock files found = 2
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number postmaster processes missing = 0
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Total number postmaster processes found = 2
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:-----------------------------------------------------
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Mirror Segment Status
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:-----------------------------------------------------
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:- Mirrors not configured on this array
20200605:14:25:01:016044 gpstate:VM01:gpadmin-[INFO]:-----------------------------------------------------



查看segment节点状态
select * from gp_segment_configuration;


查看segment节点故障等历史信息
select * from gp_configuration_history order by 1 desc ;

检查segment instance同步状态
该命令会输出各节点实例的同步状态，各节点的状态为“synchronizing”时为不正常

如果有数据，表示segment instance正在同步，隔几分钟再做一次，如果有实例长时间都不能同步完成，需要报给DBA做进一步监控

[gpadmin@VM01 ~]$ gpstate -m
20200605:14:35:54:016749 gpstate:VM01:gpadmin-[INFO]:-Starting gpstate with args: -m
20200605:14:35:55:016749 gpstate:VM01:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 6.0.0 build commit:a2ff2fc318c327d702e66ab58ae4aff34c42296c'
20200605:14:35:55:016749 gpstate:VM01:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 9.4.24 (Greenplum Database 6.0.0 build commit:a2ff2fc318c327d702e66ab58ae4aff34c42296c) on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 6.4.0, 64-bit compiled on Sep 4 2019 01:12:33'
20200605:14:35:55:016749 gpstate:VM01:gpadmin-[INFO]:-Obtaining Segment details from master...
20200605:14:35:55:016749 gpstate:VM01:gpadmin-[WARNING]:--------------------------------------------------------------
20200605:14:35:55:016749 gpstate:VM01:gpadmin-[WARNING]:-Mirror not used
20200605:14:35:55:016749 gpstate:VM01:gpadmin-[WARNING]:--------------------------------------------------------------

查看segment节点磁盘空闲情况
SELECT * FROM gp_toolkit.gp_disk_free;

检查standby同步状态
该命令会输出Standby Master的同步状态，Standby Master状态为“synchronizing”时为不正常

[gpadmin@test ~]$ gpstate -f

20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:-Starting gpstate with args: -f
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 6.0.0 build commit:a2ff2fc318c327d702e66ab58ae4aff34c42296c'
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:-master Greenplum Version: 'PostgreSQL 9.4.24 (Greenplum Database 6.0.0 build commit:a2ff2fc318c327d702e66ab58ae4aff34c42296c) on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 6.4.0, 64-bit compiled on Sep 4 2019 01:12:33'
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:-Obtaining Segment details from master...
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:-Standby master instance not configured
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:--------------------------------------------------------------
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:--pg_stat_replication
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:--------------------------------------------------------------
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:-No entries found.
20200605:16:21:22:040090 gpstate:test:gpadmin-[INFO]:--------------------------------------------------------------

检查数据库日志
日志级别： PANIC > FATAL > ERROR

gpssh -f /app/gpadmin/gpconfigs/seghosts -e "source /usr/local/greenplum-db/greenplum_path.sh && gplogfilter -b '2020-05-30 10:00:00' -e '2020-05-30 18:30:00' -f 'FATAL'" /data/primary*/gpseg*/pg_log/gpdb-2020-05-30_000000.csv


gpssh -f /app/gpadmin/gpconfigs/seghosts -e "source /usr/local/greenplum-db/greenplum_path.sh && gplogfilter -b '2020-05-30 10:00:00' -e '2020-05-30 18:30:00' -f 'PANIC'" /data/primary*/gpseg*/pg_log/gpdb-2020-05-30_000000.csv


gpssh -f /app/gpadmin/gpconfigs/seghosts -e "source /usr/local/greenplum-db/greenplum_path.sh && gplogfilter -b '2020-05-30 10:00:00' -e '2020-05-30 18:30:00' -f 'ERROR'" /data/primary*/gpseg*/pg_log/gpdb-2020-05-30_000000.csv

显示在系统表中被标记为掉线的Segment的信息
SELECT * from gp_toolkit.gp_pgdatabase_invalid;

系统情况
检查OS的日志中是否有出错告警
gpssh -f /app/gpadmin/gpconfigs/seghosts -e "cat /var/log/messages"

检查/tmp目录空间使用率
gpssh -f /app/gpadmin/gpconfigs/seghosts -e "df -h |grep /tmp"

检查GP数据目录空间使用率
gpssh -f /app/gpadmin/gpconfigs/seghosts -e "df -h |grep /data"

检查Raid卡状态
gpssh -f /app/gpadmin/gpconfigs/seghosts -e "omreport storage vdisk"


status：ok
state：ready
Read Policy：Read Ahead
Write Policy:Write Back

检查磁盘
是否有错误报出

1.gpssh -f /app/gpadmin/gpconfigs/seghosts -e "omreport storage pdisk controller=0 |grep -i fail/state "

2.gpssh -f /app/gpadmin/gpconfigs/seghosts -e "omreport storage pdisk controller=1 grep -i fail/state"

OS关键目录剩余空间监控
剩余空间应大于30%

gpssh -f /app/gpadmin/gpconfigs/seghosts -e "df -h |grep tmp"
gpssh -f /app/gpadmin/gpconfigs/seghosts -e "df -h |grep sda1"

检查RAID卡电池状态
检查是否有充电中的节点，如果有，需要请系统管理员及时跟进充电状态，如果持续10小时未能完成充电，需要请硬件原厂服务判断是否需要更换RAID卡电池

gpssh -f /app/gpadmin/gpconfigs/seghosts -e "omreport storage battery"

时钟同步情况
使集群内所有机器的时间一致

如果时间不一致，需要立即同步

gpssh -f /app/gpadmin/gpconfigs/seghosts -e "date"

Hosts文件检查
收集各台主机的/etc/hosts文件，检查各台主机hosts文件内容是否一致

gpssh -f /app/gpadmin/gpconfigs/seghosts -e "cat /etc/hosts"

系统参数核查
系统参数核查是否正确

gpssh -f /app/gpadmin/gpconfigs/seghosts -e "more /etc/project"

其他
查看正在执行的SQL进程
指定列名称查询
SELECT datname,pid,usename,waiting,waiting_reason,state,query,application_name,client_addr,client_port,backend_start,query_start FROM pg_stat_activity;

正在活动的进程
select * from pg_stat_activity where state ='active’;

空闲的进程
select * from pg_stat_activity where state =‘idle';

Kill正在执行的SQL进程
这个函数只能 kill、Select查询，而updae、delete DML不生效
select pg_cancel_backend(进程pid);

可以kill 各种DML(SELECT,UPDATE,DELETE,DROP)操作
select pg_terminate_backend(线程id);

资源队列检查
查看greenplum资源队列状态
SELECT * FROM gp_toolkit.gp_resqueue_status;

查看greemplum资源队列锁
SELECT * FROM gp_toolkit.gp_locks_on_resqueue WHERE lorwaiting='true';

查看greemplum资源队列优先级
select * from gp_toolkit.gp_resq_priority_statement;

表数据重新分布
不会改变分布键，会清理过期空间
ALTER TABLE table_name SET WITH (REORGANIZE=true);

指定新的分布键，会清理过期空间
ALTER TABLE table_name SET WITH (REORGANIZE=true) DISTRIBUTED BY (column_name,column_name);

修改表分布策略为随机分布，但是不移动数据
ALTER TABLE table_name SET WITH (REORGANIZE=false) DISTRIBUTED randomly;

查看数据库使用容量
greemplum所有数据库大小（占用空间）
select datname,pg_size_pretty(pg_database_size(datname)) from pg_database;

greemplum查看指定数据库大小（占用空间）
select pg_size_pretty(pg_database_size('postgres'));

查看表容量
查询分区表容量，优化容量大小为可读
SELECT pg_size_pretty((t1.raw_data_size)) FROM (
SELECT SUM(pg_relation_size(psut.relid)) as raw_data_size
FROM pg_statio_user_tables psut
INNER JOIN pg_inherits pi ON psut.relid = pi.inhrelid
WHERE pi.inhparent = ‘scheme.table_name'::regclass
) t1;

查询分区表容量
SELECT SUM(pg_relation_size(psut.relid)) as raw_data_size
FROM pg_statio_user_tables psut
INNER JOIN pg_inherits pi ON psut.relid = pi.inhrelid
WHERE pi.inhparent = ‘scheme.table_name'::regclass;

查询表容量，优化容量大小为可读
SELECT pg_size_pretty(pg_relation_size('scheme.table_name’));

查询表容量
select pg_size_pretty(pg_total_relation_size('scheme.table_name'));

查看表是否需要ANALYZE
此视图显示没有统计信息的表，因此可能需要在表上运行分析。

SELECT * FROM gp_toolkit.gp_stats_missing;
SELECT * FROM gp_toolkit.gp_stats_missing where smisize = 'f’;

收集统计分析信息 ANALYZE TABLE_NAME
ANALYZE table_name;

查看表膨胀情况
这个视图显示了具有膨胀的常规堆存储表(给定表统计数据，磁盘上的实际页面数超过了预期的页面数)。膨胀的表需要一个VACUUM或一个VACUUM FULL，以回收被删除或废弃的行占用的磁盘空间。

SELECT * FROM gp_toolkit.gp_bloat_diag;

查看数据分布和倾斜情况
select gp_segment_id,count(*) from table_name group by gp_segment_id order by 1;

SELECT
t1.gp_segment_id,
t1.count_tatol,
round( t1.count_tatol - ( AVG ( t1.count_tatol ) OVER ( ) ), 0 )
FROM
( SELECT gp_segment_id, COUNT ( * ) count_tatol FROM table_name
GROUP BY gp_segment_id ) t1
ORDER BY
3


SQL执行时间检查
该命令会输出当前正在执行的SQL信息，检查各语句的“query_start”字段中的时间是否在6个小时之前。

与应用联系确认该语句执行时间是否正常。如不正常，通知DBA处理。

select
procpid , usename ,replace(current_query,E'\x09','') as current_query,
waiting ,date_trunc('seconds', query_start)::timestamp as query_start,
to_char( (now() - query_start), 'HH24:MI:SS') as duration ,
client_addr, client_port, application_name, xact_start
from pg_stat_activity;

数据增长状态
与前一月的数据做对比,如果增长量出现异常，需要进一步分析

select pg_size_pretty(pg_database_size('db_name'));

Statistics 状态检查
select * from gp_toolkit.gp_stats_missing where smisize='f';

数据库参数核查
max_connections
max_prepared_transaction
gp_fault_action
gp_interconnect_setup_timeout
max_fsm_relations
max_fsm_pages
gp_vmem_protect_limit
work_mem
stats_queue_level

1. 查看参数
gpconfig -s param_name

2. 设置参数
gpconfig -c gp_enable_global_deadlock_detector -v on

重新建立数据库目录的索引
提高数据库目录性能

Reindex system <databasename>;

备份和导入导出
并发数据备份
[gpadmin@VM01 bin]$ gpbackup -dbname dw_szsbank_est_import --backup-dir /home/gpadmin/gpbackup/

20200603:09:26:41 gpbackup:gpadmin:VM01:027659-[INFO]:-Starting backup of database dw_szsbank_est_import
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Backup Timestamp = 20200603092641
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Backup Database = dw_szsbank_est_import
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Gathering table state information
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Acquiring ACCESS SHARE locks on tables
Locks acquired: 58 / 58 [==============================================================] 100.00% 0s
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Gathering additional table metadata
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Getting partition definitions
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Getting storage information
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Metadata will be written to /home/gpadmin/gpbackup/gpseg-1/backups/20200603/20200603092641/gpbackup_20200603092641_metadata.sql
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Writing global database metadata
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Global database metadata backup complete
20200603:09:26:42 gpbackup:gpadmin:VM01:027659-[INFO]:-Writing pre-data metadata
20200603:09:26:43 gpbackup:gpadmin:VM01:027659-[INFO]:-Pre-data metadata backup complete
20200603:09:26:43 gpbackup:gpadmin:VM01:027659-[INFO]:-Writing post-data metadata
20200603:09:26:43 gpbackup:gpadmin:VM01:027659-[INFO]:-Post-data metadata backup complete
20200603:09:26:43 gpbackup:gpadmin:VM01:027659-[INFO]:-Writing data to file
Tables backed up: 58 / 58 [==========================================================] 100.00% 5m1s
20200603:09:31:45 gpbackup:gpadmin:VM01:027659-[INFO]:-Data backup complete
20200603:09:31:46 gpbackup:gpadmin:VM01:027659-[INFO]:-Found neither /usr/local/greenplum-db/./bin/gp_email_contacts.yaml nor /home/gpadmin/gp_email_contacts.yaml
20200603:09:31:46 gpbackup:gpadmin:VM01:027659-[INFO]:-Email containing gpbackup report /home/gpadmin/gpbackup/gpseg-1/backups/20200603/20200603092641/gpbackup_20200603092641_report will not be sent
20200603:09:31:46 gpbackup:gpadmin:VM01:027659-[INFO]:-Backup completed successfully



并发数据恢复
[gpadmin@VM01 ~]$ gprestore --backup-dir /home/gpadmin/gpbackup --timestamp 20200603092641 --redirect-db dw_szsbank_est_import_restore --create-db

20200604:07:33:47 gprestore:gpadmin:VM01:000423-[INFO]:-Restore Key = 20200603092641
20200604:07:33:48 gprestore:gpadmin:VM01:000423-[INFO]:-Creating database
20200604:07:33:50 gprestore:gpadmin:VM01:000423-[INFO]:-Database creation complete for: dw_szsbank_est_import_restore
20200604:07:33:50 gprestore:gpadmin:VM01:000423-[INFO]:-Restoring pre-data metadata
Pre-data objects restored: 1384 / 1384 [===============================================] 100.00% 7s
20200604:07:33:57 gprestore:gpadmin:VM01:000423-[INFO]:-Pre-data metadata restore complete
Tables restored: 58 / 58 [=========================================================] 100.00% 13m55s
20200604:07:47:52 gprestore:gpadmin:VM01:000423-[INFO]:-Data restore complete
20200604:07:47:52 gprestore:gpadmin:VM01:000423-[INFO]:-Restoring post-data metadata
20200604:07:47:53 gprestore:gpadmin:VM01:000423-[INFO]:-Post-data metadata restore complete
20200604:07:47:53 gprestore:gpadmin:VM01:000423-[INFO]:-Found neither /usr/local/greenplum-db/./bin/gp_email_contacts.yaml nor /home/gpadmin/gp_email_contacts.yaml
20200604:07:47:53 gprestore:gpadmin:VM01:000423-[INFO]:-Email containing gprestore report /home/gpadmin/gpbackup/gpseg-1/backups/20200603/20200603092641/gprestore_20200603092641_20200604073347_report will not be sent
20200604:07:47:53 gprestore:gpadmin:VM01:000423-[INFO]:-Restore completed successfully



COPY方式导出数据
导出数据带表头
COPY (SELECT * FROM table_name ) TO 'xxx.csv' DELIMITER AS E'\001' HEADER CSV;

导出数据不带表头
COPY (SELECT * FROM table_name ) TO 'xxx.csv' DELIMITER AS E'\001' CSV;

copy导入数据
COPY table_name FROM 'xxx.csv' DELIMITER AS E'\001' HEADER NULL AS '' CSV;

COPY table_name FROM 'xxx.csv' DELIMITER AS E'\001' NULL AS '' CSV;

参考：Greenplum常用SQL查询

本文来源：https://blog.csdn.net/sinat_37316828/article/details/106691206