udw⽀持按照postgresql的客⼾端来访问udw，⽀持udw客⼾端访问，还可以⽀持jdbc、odbc、php、python、psql等⽅式来访问udw。另外，也可以通过图形化的SQL Workbench/J、 Navicat等⼯具来访问udw。 1.1 psql客户端⽅式访问 客户端⽅式访问 下载psql客⼾端 yum install postgresql.x86_64 (64位系统) psql -h hostIP（或域名）

Self-deadlock – 每条SQL语句占用一个slot – extended query • prepare/bind/execute libpq protocol • cursor • named portal – SQL结束不一定释放slot – 一个事务用光所有slot 2017 年象行中国（杭州 站）第一期 Resource Queue • System PANIC – 需要睡眠/唤醒机制

Playbook 0 Ansible Playbook - Greenplum Database Installation for CentOS 7 305 Greenplum Database Cloud Technical Recommendations 308 Operating System 308 Storage 308 Security 308 Amazon Web Services 31736 - Resource Queues : Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of VMware Greenplum v6 memory error. This issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. 31734 : Greenplum was generating the error ERROR: interconnect

Playbook 0 Ansible Playbook - Greenplum Database Installation for CentOS 7 315 Greenplum Database Cloud Technical Recommendations 317 Operating System 317 Storage 317 Security 317 Amazon Web Services 31736 - Resource Queues : Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of shared memory error error. This issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. VMware Greenplum v6.19 Documentation VMware, Inc. 159 31734 : Greenplum

Playbook 309 Ansible Playbook - Greenplum Database Installation for CentOS 7 310 Greenplum Database Cloud Technical Recommendations 312 VMware Tanzu Greenplum v6.20 Documentation VMware, Inc. 13 Operating 31736 - Resource Queues : Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of shared memory error error. This issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. VMware Tanzu Greenplum v6.20 Documentation VMware, Inc. 156 31734 :

on DCA Systems 293 Storage 293 Hadoop Distributions 294 VMware vSphere Requirements 294 Public Cloud Requirements 295 Operating System 295 Storage 295 Amazon Web Services (AWS) 295 Virtual Machine 31736 - Resource Queues Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of shared memory error error. This issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. 31734 Greenplum was generating the error ERROR: interconnect error:

Connectors 261 VMware Greenplum Text 262 Greenplum Command Center 263 Hadoop Distributions 263 Public Cloud Requirements 263 Operating System 263 Storage 263 Security 264 Amazon Web Services (AWS) 264 31736 - Resource Queues Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of shared memory error error. This issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. 31734 Greenplum was generating the error ERROR: interconnect error:

VMware Tanzu Greenplum 6 Documentation VMware, Inc 10 Hadoop Distributions 255 Greenplum Database Cloud Technical Recommendations 255 Operating System 255 Storage 255 Security 256 Amazon Web Services 31736 - Resource Queues Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of shared memory error error. This issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. 31734 Greenplum was generating the error ERROR: interconnect error:

Tanzu Greenplum Text 251 Greenplum Command Center 251 Hadoop Distributions 251 Greenplum Database Cloud Technical Recommendations 251 Operating System 251 Storage 252 Security 252 Amazon Web Services 31736 - Resource Queues Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of shared memory error VMware, Inc. 165 issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. 31734 Greenplum was generating the error ERROR: interconnect

Connectors 279 VMware Greenplum Text 281 Greenplum Command Center 281 Hadoop Distributions 281 Public Cloud Requirements 281 Operating System 281 Storage 282 Security 282 Amazon Web Services (AWS) 282 31736 - Resource Queues Due to improper error handling, Greenplum Database raised a duplicate portal identifier warning that was in some cases immediately followed by an out of shared memory error VMware, Inc. 194 issue is resolved; Greenplum Database now raises distinct errors for duplicate portal identifier and out of shared memory. 31734 Greenplum was generating the error ERROR: interconnect