线下GaussDB(DWS) 8115版本中，查询pg_resource_pool，只有一个default_pool一个资源池， 但是查询pgxc_stat_activity 这个视图的时候，发现有的SQL使用的资源池是root，该用户是普通用户，并非管理员执行运维操作。 请问一下，root资源池是什么，资源分配比率是多少？以及什么时候普通用户也会使用root资源池（没有set resource_pool='root'）？ 

max_dynamic_memory，dynamic_used_memory和process memory allocation三者有什么区别和关联？在执行任务时的前后顺序是怎样的？

为什么嵌套case when 会非常消耗内存？

安装部署单节点的GaussDB管理平台失败了，请帮忙给看看，谢谢[2024-10-25 08:27:33.880]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[common-base-install.sh:184]-[install]-[common-base]===>[Start to install common-base.] [2024-10-25 08:27:33.896]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[common-base-install.sh:186]-[install]-[common-base]===>[Service status: [error]] [2024-10-25 08:27:33.916]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[common-base-install.sh:193]-[install]-[common-base]===>[The rest retry times: 1.] [2024-10-25 08:27:33.951]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[common-base-install.sh:196]-[install]-[common-base]===>[Upgrade retry num successful. rest retry times: 0] [2024-10-25 08:27:33.973]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[common-base-install.sh:197]-[install]-[common-base]===>[Status:[running], update successful.] [2024-10-25 08:27:33.988]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[ERROR]-[common-base-install.sh:209]-[install]-[common-base]===>[Get and decrypt ca_key_phrase from render_args.yml error.] [2024-10-25 08:27:34.005]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[common-base-install.sh:210]-[install]-[common-base]===>[Status:[error], update successful.] [2024-10-25 08:27:34.022]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[crontab_file.sh:346]-[main]-[install]===>[sleep 10 second wait for all [install] done.] [2024-10-25 08:27:44.045]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[process_level.sh:56]-[update_remote_manifest]-[manifest]===>[start to update level status for ip=10.203.13.57] [2024-10-25 08:27:44.054]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[process_level.sh:68]-[update_level_manifest]-[manifest]===>[Updates the level status based on the microservice status. remote_manifest=/data/docker-service/config/manifest.yaml] [2024-10-25 08:27:44.208]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[process_level.sh:122]-[update_level_manifest]-[manifest]===>[update level=CommonbaseData status to error] [2024-10-25 08:27:44.515]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[ERROR]-[process_level.sh:274]-[check_exit]-[]===>[ip=10.203.13.57, level=CommonbaseData, ['install'] error.] [2024-10-25 08:27:44.560]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[process_level.sh:299]-[check_exit]-[]===>[del_flag=1] [2024-10-25 08:27:44.567]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[INFO]-[process_level.sh:301]-[check_exit]-[]===>[some nodes[0] occured error. Exit.] [2024-10-25 08:27:47.901]-[de6baf00-09b8-4a12-8e87-f2092f4c29d1]-[WARNING]-[appctl.sh:454]-[deploy_monitor_crontab]-[monitor]===>[The main process is abnormal.] 

怎么单独给grant权限？grant usage on schema xx to username吗？然后存量表 grant select all tables in schame xx to username;增量表 ALTER DEFAULT PRIVILEGES IN SCHEMA tpcds GRANT SELECT ON TABLES TO username;设置后就可以对其他用户授权select权限了吗？对于新建schema有什么方法没？

$ gs_install -X /opt/software/openGauss/cluster_config.xml --gsinit-parameter="--locale=zh_CN.UTF-8"Parsing the configuration file.Check preinstall on every node.Successfully checked preinstall on every node.Creating the backup directory.Successfully created the backup directory.begin deploy..Installing the cluster.begin prepare Install Cluster..Checking the installation environment on all nodes.begin install Cluster..Installing applications on all nodes.Successfully installed APP.begin init Instance..encrypt cipher and rand files for database.Please enter password for database:Please repeat for database:begin to create CA cert filesThe sslcert will be generated in /opt/huawei/install/app/share/sslcert/omNO cm_server instance, no need to create CA for CM.Non-dss_ssl_enable, no need to create CA for DSSCluster installation is completed.Configuring.Deleting instances from all nodes.Successfully deleted instances from all nodes.Checking node configuration on all nodes.Initializing instances on all nodes.Updating instance configuration on all nodes.Check consistence of memCheck and coresCheck on database nodes.Configuring pg_hba on all nodes.Configuration is completed.Using omm:dbgroup to install database.Using installation program path : /opt/huawei/install/app_33b035fd$GAUSSHOME points to /opt/huawei/install/app_33b035fd, no need to create symbolic link.Traceback (most recent call last):  File "/opt/huawei/install/om/script/local/Install.py", line 812, in <module>    functionDict[g_opts.action]()  File "/opt/huawei/install/om/script/local/Install.py", line 743, in startCluster    dn.start(self.time_out)  File "/opt/huawei/install/om/script/local/../gspylib/component/Kernel/Kernel.py", line 104, in start    raise Exception(ErrorCode.GAUSS_516["GAUSS_51607"] % "instance"Exception: [GAUSS-51607] : Failed to start instance. Error: Please check the gs_ctl log for failure details.[2024-10-16 10:32:52.678][21933][][gs_ctl]: gs_ctl started,datadir is /opt/huawei/install/data/dn [2024-10-16 10:32:52.740][21933][][gs_ctl]: waiting for server to start....0 LOG:  [Alarm Module]can not read GAUSS_WARNING_TYPE env.0 LOG:  [Alarm Module]Host Name: tims-ai-6-1 0 LOG:  [Alarm Module]Host IP: tims-ai-6-1. Copy hostname directly in case of taking 10s to use 'gethostbyname' when /etc/hosts does not contain <HOST IP>0 LOG:  [Alarm Module]Cluster Name: dbCluster 0 LOG:  [Alarm Module]Invalid data in AlarmItem file! Read alarm English name failed! line: 580 WARNING:  failed to open feature control file, please check whether it exists: FileName=gaussdb.version, Errno=2, Errmessage=No such file or directory.0 WARNING:  failed to parse feature control file: gaussdb.version.0 WARNING:  Failed to load the product control file, so gaussdb cannot distinguish product version.0 LOG:  bbox_dump_path is set to /opt/huawei/corefile/2024-10-16 10:32:52.869 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 DB010  0 [REDO] LOG:  Recovery parallelism, cpu count = 8, max = 4, actual = 42024-10-16 10:32:52.869 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 DB010  0 [REDO] LOG:  ConfigRecoveryParallelism, true_max_recovery_parallelism:4, max_recovery_parallelism:4gaussdb.state does not exist, and skipt setting since it is optional.2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]can not read GAUSS_WARNING_TYPE env.2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Host Name: tims-ai-6-1 2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Host IP: tims-ai-6-1. Copy hostname directly in case of taking 10s to use 'gethostbyname' when /etc/hosts does not contain <HOST IP>2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Cluster Name: dbCluster 2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Invalid data in AlarmItem file! Read alarm English name failed! line: 582024-10-16 10:32:52.918 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  loaded library "security_plugin"2024-10-16 10:32:52.923 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 01000  0 [BACKEND] WARNING:  could not create any HA TCP/IP sockets2024-10-16 10:32:52.923 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 01000  0 [BACKEND] WARNING:  could not create any HA TCP/IP sockets2024-10-16 10:32:52.932 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  InitNuma numaNodeNum: 1 numa_distribute_mode: none inheritThreadPool: 0.2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  reserved memory for backend threads is: 340 MB2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  reserved memory for WAL buffers is: 320 MB2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  Set max backend reserve memory is: 660 MB, max dynamic memory is: 4079 MB2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  shared memory 4476 Mbytes, memory context 4739 Mbytes, max process memory 10240 Mbytes2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  shared memory that key is 5432001 is owned by pid 122722024-10-16 10:32:53.927 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [CACHE] LOG:  set data cache  size(805306368)2024-10-16 10:32:55.039 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [SEGMENT_PAGE] LOG:  Segment-page constants: DF_MAP_SIZE: 8156, DF_MAP_BIT_CNT: 65248, DF_MAP_GROUP_EXTENTS: 4175872, IPBLOCK_SIZE: 8168, EXTENTS_PER_IPBLOCK: 1021, IPBLOCK_GROUP_SIZE: 4090, BMT_HEADER_LEVEL0_TOTAL_PAGES: 8323072, BktMapEntryNumberPerBlock: 2038, BktMapBlockNumber: 25, BktBitMaxMapCnt: 5122024-10-16 10:32:55.206 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  gaussdb: fsync file "/opt/huawei/install/data/dn/gaussdb.state.temp" success2024-10-16 10:32:55.206 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  create gaussdb state file success: db state(STARTING_STATE), server mode(Normal), connection index(1)2024-10-16 10:32:55.236 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  max_safe_fds = 974, usable_fds = 1000, already_open = 16bbox_dump_path is set to /opt/huawei/corefile/2024-10-16 10:32:55.240 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  user configure file is not found, it will be created.[2024-10-16 10:32:58.748][21933][][gs_ctl]:  gaussDB state is Coredump[2024-10-16 10:32:58.748][21933][][gs_ctl]: stopped waiting[2024-10-16 10:32:58.748][21933][][gs_ctl]: could not start serverExamine the log output.[GAUSS-51607] : Failed to start instance. Error: Please check the gs_ctl log for failure details.[2024-10-16 10:32:52.678][21933][][gs_ctl]: gs_ctl started,datadir is /opt/huawei/install/data/dn [2024-10-16 10:32:52.740][21933][][gs_ctl]: waiting for server to start....0 LOG:  [Alarm Module]can not read GAUSS_WARNING_TYPE env.0 LOG:  [Alarm Module]Host Name: tims-ai-6-1 0 LOG:  [Alarm Module]Host IP: tims-ai-6-1. Copy hostname directly in case of taking 10s to use 'gethostbyname' when /etc/hosts does not contain <HOST IP>0 LOG:  [Alarm Module]Cluster Name: dbCluster 0 LOG:  [Alarm Module]Invalid data in AlarmItem file! Read alarm English name failed! line: 580 WARNING:  failed to open feature control file, please check whether it exists: FileName=gaussdb.version, Errno=2, Errmessage=No such file or directory.0 WARNING:  failed to parse feature control file: gaussdb.version.0 WARNING:  Failed to load the product control file, so gaussdb cannot distinguish product version.0 LOG:  bbox_dump_path is set to /opt/huawei/corefile/2024-10-16 10:32:52.869 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 DB010  0 [REDO] LOG:  Recovery parallelism, cpu count = 8, max = 4, actual = 42024-10-16 10:32:52.869 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 DB010  0 [REDO] LOG:  ConfigRecoveryParallelism, true_max_recovery_parallelism:4, max_recovery_parallelism:4gaussdb.state does not exist, and skipt setting since it is optional.2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]can not read GAUSS_WARNING_TYPE env.2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Host Name: tims-ai-6-1 2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Host IP: tims-ai-6-1. Copy hostname directly in case of taking 10s to use 'gethostbyname' when /etc/hosts does not contain <HOST IP>2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Cluster Name: dbCluster 2024-10-16 10:32:52.892 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  [Alarm Module]Invalid data in AlarmItem file! Read alarm English name failed! line: 582024-10-16 10:32:52.918 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  loaded library "security_plugin"2024-10-16 10:32:52.923 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 01000  0 [BACKEND] WARNING:  could not create any HA TCP/IP sockets2024-10-16 10:32:52.923 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 01000  0 [BACKEND] WARNING:  could not create any HA TCP/IP sockets2024-10-16 10:32:52.932 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  InitNuma numaNodeNum: 1 numa_distribute_mode: none inheritThreadPool: 0.2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  reserved memory for backend threads is: 340 MB2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  reserved memory for WAL buffers is: 320 MB2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  Set max backend reserve memory is: 660 MB, max dynamic memory is: 4079 MB2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  shared memory 4476 Mbytes, memory context 4739 Mbytes, max process memory 10240 Mbytes2024-10-16 10:32:52.933 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  shared memory that key is 5432001 is owned by pid 122722024-10-16 10:32:53.927 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [CACHE] LOG:  set data cache  size(805306368)2024-10-16 10:32:55.039 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [SEGMENT_PAGE] LOG:  Segment-page constants: DF_MAP_SIZE: 8156, DF_MAP_BIT_CNT: 65248, DF_MAP_GROUP_EXTENTS: 4175872, IPBLOCK_SIZE: 8168, EXTENTS_PER_IPBLOCK: 1021, IPBLOCK_GROUP_SIZE: 4090, BMT_HEADER_LEVEL0_TOTAL_PAGES: 8323072, BktMapEntryNumberPerBlock: 2038, BktMapBlockNumber: 25, BktBitMaxMapCnt: 5122024-10-16 10:32:55.206 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  gaussdb: fsync file "/opt/huawei/install/data/dn/gaussdb.state.temp" success2024-10-16 10:32:55.206 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  create gaussdb state file success: db state(STARTING_STATE), server mode(Normal), connection index(1)2024-10-16 10:32:55.236 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  max_safe_fds = 974, usable_fds = 1000, already_open = 16bbox_dump_path is set to /opt/huawei/corefile/2024-10-16 10:32:55.240 670f25d4.1 [unknown] 139861824102464 [unknown] 0 dn_6001 00000  0 [BACKEND] LOG:  user configure file is not found, it will be created.[2024-10-16 10:32:58.748][21933][][gs_ctl]:  gaussDB state is Coredump[2024-10-16 10:32:58.748][21933][][gs_ctl]: stopped waiting[2024-10-16 10:32:58.748][21933][][gs_ctl]: could not start serverExamine the log output.安装环境：系统是NAME="openEuler"   VERSION="22.03 (LTS-SP3）下载的gauss版本：openGauss-5.0.1-openEuler-64bit-all.tar.gz系统32GB内存

GaussDB 200 8.1.1.5版本集群，如何加速VACUUM FULL ANALYZE 系统表脏页释放？set那些参数有效果？80节点集群是否有办法控制在半小时内？

在线下Gaussdb 8115版本中，如何处理json字符串，获取json字符串中的某个key的value值，有对应的函数吗？

线下DWS 8.1.1.5版本，VACUUM FULL 系统表时如果存在业务语句执行，除了会出现锁等待是否还有其他影响？业务数据不一致？元数据不一致？

线下8.1.1.5版本在使用用户空间时怎么快速定位单dn中的那个schema下的那些表倾斜引起空间超出？

线下8.1.1.5版本管理员用户的连接数也在max_active_statements的限制下吗？怎么设置不在max_active_statements连接数内？

环境说明当前GaussDB部署主要为轻量化部署（TPOPS）和GaussDBInstaller（这个很重要，小本本记下来）本文采用TPOPS部署模式进行说明本文部署模式为：分布式三节点本文数据库内核版本为：503.1.0启动ssl并配置ssl适用范围注：当前演示信息ssl证书采用数据库预置证书使用Ruby用户登录数据库任意主机开启SSL认证模式gs_guc set -Z coordinator -D /var/chroot/var/lib/engine/data1/cn -c "ssl=on"注意：这里的-D指定路径信息，在TPOPS部署模式下为：/var/chroot/var/lib/engine/data1/cn，在GaussDBInstaller部署模式下该路径在install_cluster.conf中定义的cn_dir变量配置客户端接入认证gs_guc reload -Z coordinator -D /var/chroot/var/lib/engine/data1/cn -h "hostssl all all 10.10.10.0/24 cert"注：可根据实际需要设置ssl连接的网段信息，所有连接均需要ssl的话请将IP地址替换为0.0.0.0/0配置ssl相关的证书参数gs_guc set -Z coordinator -D /var/chroot/var/lib/engine/data1/cn -c "ssl_cert_file='server.crt'" gs_guc set -Z coordinator -D /var/chroot/var/lib/engine/data1/cn -c "ssl_key_file='server.key'" gs_guc set -Z coordinator -D /var/chroot/var/lib/engine/data1/cn -c "'ssl_ca_file='cacert.pem'"重启数据库tpops部署请前往控制台点击重启，GaussDBInstaller部署则使用gs_om -t stop && gs_om -t start

华为云开发者日·武汉站来啦！参加“使用GaussDB(for MySQL)挑战数据业务汇报任务”体验项目提出你的建议或使用体验有机会获得开发者盲盒礼包惊喜不容错过，快叫上小伙伴一起来参加吧~【体验项目】使用GaussDB(for MySQL)挑战数据业务汇报任务【活动时间】2024年10月16日-10月20日【参与方式】直接在此活动帖下方回帖提建议/提建议即可比如对产品功能的改进建议、对活动流程的感想、对现场活动的感悟等等PS：不要少于30字哦~【获奖规则】奖项设置有效回复楼层评选条件获奖名额激励礼品优质建议奖20对产品功能有改进价值的建议1名开发者盲盒礼品价值50-100元积极反馈奖20优质建议奖轮空的情况下进行抽取每满20层抽取1名开发者盲盒礼品价值50元【活动规则】1、本帖的回帖建议不少于30字，仅限于对“使用GaussDB(for MySQL)挑战数据业务汇报任务”体验项目，其他项目建议不参与此次活动，否则将视为无效内容。2、本次活动将根据实际参与情况发放奖励，包括但不限于用户百分之百中奖或奖项轮空的情况；以上奖品均为实物奖品，具体发放视出库情况而定；3、活动预计于结束后七天内完成奖项公示，并于结束后15个工作日内完成邮寄。【温馨提示】1、请务必使用个人实名账号参与活动（IAM、企业账号等账号参与无效）。如一个实名认证对应多个账号，只有一个账号可领取奖励，若同一账号填写多个不同收件人或不同账号填写同一收件人，均不予发放奖励。2、所有获得奖品的获奖用户，请于获奖后3日内完成实名认证，否则视为放弃奖励。

在gsql命令方式中，使用\copy导入CSV文件的任意几列数据，如何实现？请教各位老师。

使用gsql命令方式，用\copy命令导数如何导入CSV文件的其中几列数据？请教各位老师。