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北斗云

Dremio案例_Hive数据分析

说明 Dremio-3.3.1支持Hive-2.1.1版本 1.Hive批量导入数据 a).创建表 ## 创建文本数据导入表 CREATE TABLE IF NOT EXISTS database.table_name( agent_id int, accept_time string, ...

bjcuug

OCP-052考试题库汇总(39)-CUUG内部解答版

Which three are true about auditing? A)Auditing is active only when the database is OPEN. B)Audit records are always stored in the database.

bjcuug

OCP-052考试题库汇总(35)-CUUG内部解答版

Which two are true about Oracle Data Pump in Oracle Database 11g Release 2? A)If the directory used in the export operation has existing dump files, it overwrites them.

yaohong

Kubernetes-保障集群内节点和网络安全

13.1.在pod中使用宿主节点的Linux命名空间13.1.1.在pod中使用宿主节点的网络命名空间   在pod的yaml文件中就设置spec.hostNetwork: true    这个时候pod使用宿主机的网络,如果设置了端口,则使用宿主机的端口。

bjcuug

OCP-052考试题库汇总(33)-CUUG内部解答版

Which two can be exported by a non-administrative account by using Data Pump? A)directory objects B)tables C)tablespaces D)schemas E)database Answer: BD 赵: EXP 和 IMP 是客户端工具程序,它们既可以在客户端使用,也可以在服务端使用。

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OCP-052考试题库汇总(32)-CUUG内部解答版

Which state must a database be to enable ARCHIVELOG ? A)NOMOUNT B)OPEN IN READ WRITE mode C)OPEN IN READ ONLY mode D)OPEN IN RESTRICTED mode E)MOUNT ...

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OCP-052考试题库汇总(31)-CUUG内部解答版

which four are true about the tools used to administer Oracle database? A)the Data Pump utility can be used to load data from text files.

程序狗狐狸

阿里云上安装pg数据库安装

阿里云上安装pg数据库安装: 1、首先更新本地包索引(可以不执行): (sudo) apt update 2、 安装PostgreSQL服务器和PostgreSQL contrib包,它为PostgreSQL数据库提供了额外的功能: (sudo) ap.

北斗云

Apache Doris常用命令

一.配置 Ⅰ).BE vi be.conf # INFO,WARNING,ERROR,FATAL sys_log_level=INFO # ports for admin,web,heartbeat service be_port=9060 be_rpc_port=9070 webserver_.

北斗云

ClickHouse常用命令

一.安装使用 Ⅰ).安装 yum install clickhouse-client clickhouse-server Ⅱ).配置 a).clickhouse-server CLICKHOUSE_USER=username CLICKHOUSE_LOGDIR=${CLICKHOUSE_HOME.

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OCP-052考试题库汇总(30)-CUUG内部解答版

Which two are true about the Inventory directory? A)It is shared by all Oracle software installations on a single server.

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OCP-052考试题库汇总(28)-CUUG内部解答版

Archivelog mode is enabled for your database and DB_CREATE_FILE_DEST is set to ‘/u01/oracle/db01’. The parameters, DB_CREATE_ONLINE_LOG_DEST_n and DB_RECOVERY_FILE_DEST, and not specified.

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OCP-052考试题库汇总(27)-CUUG内部解答版

Which two of these must be available READ/WRITE to keep a database open? A)all copies of the control file.

黄小斜

重新学习Mysql数据13:Mysql主从复制,读写分离,分表分库策略与实践

一、MySQL扩展具体的实现方式 随着业务规模的不断扩大,需要选择合适的方案去应对数据规模的增长,以应对逐渐增长的访问压力和数据量。

bjcuug

OCP-052考试题库汇总(26)-CUUG内部解答版

Which three of these must be accessible to keep a database open? A)Control file. B)All members of a redo log group. C)SYSTEM tablespace. D)SYSAUX tablespace. E)spfile Answer: ABC 赵: 1 nomount:实例已经启动,进程和内存已经分配。

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OCP-052考试题库汇总(25)-CUUG内部解答版

Which four database objects never have any segments? A)A partitioned index B)A view selecting from a populated table C)An empty index D)An Oracle Loader type external table E)An empty table F)A view selecting from an empty table G)An Oracle Data Pump type external table Answer: BDFG 赵:视图和外部表不存在段。

Ali_冷香

RDS MySQL 8.0 Recycle Bin

RDS MySQL 8.0 Recycle Bin 背景         MySQL 在生产环境使用过程中,会伴随着开发和运维人员的误操作,比如 DROP TABLE / DATABASE,这类 DDL 语句不具有可操作的回滚特性,而导致数据丢失,AliSQL 8.0 新特性支持回收站功能(Recycle Bin),临时把删除清理的表转移到回收站,并保留可设置的时间,方便用户找回数据。

Java架构师追风

SpringBoot启动机制(starter机制)核心原理详解

SpringBoot启动机制(starter机制)核心原理详解