Database Administrator

Solutions to RMAN connection to secondary database ORA-04031 An error occurred while connecting to the secondary instance when Oracle 10 Gb built dg to use rman to copy the database. The error message is as follows:[Oracle @ oracle11g admin] $ rman

Oracle media sorting before 10 GB Sort out the official Oracle 10g media for friends who need it. Oracle9i Database Release 2 Enterprise/Standard/Personal Edition for Windows

Process Monitoring Tool Supervisor starts MongoDB 1. What is a supervisor? Superviosr is a process monitoring tool on a UNIX-like system. Supervisor is a Python-developed client/server system that can manage and monitor processes on * nix. However,

Problem Environment:1. Database version: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0-64bit Production2. Operating System Environment: Windows 7 flagship edition 64-bit3. Four Oracle database software (four database software, not four

Database System Principle-ER model and relational model, database system principle er The database system is a type of software, and the database system naturally has its own life cycle-lifetime. Its survival period starts from planning to

Use JDBC to operate stored procedures and jdbc to operate stored procedures   You can use CallableStatement to perform JDBC operations on stored procedures. The SQL statement for calling the stored procedure is: {call procedure_name [(arg1), (arg2)]}

Oracle SQL statements do not support the boolean Type (decode & case) Version:SQL> select * from v $ version; BANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.1.0.

Hive date functions, Hive date functions1. unix timestamp to Time Function Syntax: from_unixtime (bigint unixtime [, string format]) Return Value: string Description: converts a UNIX timestamp (from 00:00:00 UTC to the specified time in seconds) to

[Translated from mos] asmcmd command is used to copy the asm file between the local and remote asm instances. asmcmdasm Use the asmcmd command to copy the asm file between the local and remote asm instances. Reference Original:How to Copy asm files

Database Design-Data Flow Diagram (DFD) and data flow dfd1. Data Flow Diagram definition data flow diagram (DFD) is a tool used in structural analysis. It graphically depicts the process of data flow and processing in the system, because it only

"Go" couldn't connect to server 127.0.0.1: 27017 at src/mongo/shell/mongo. js: 145, "go" 27017 Couldn't connect to server 127.0.0.1: 27017 at src/mongo/shell/mongo. js: 145. For more information, see. It should be because the installation was not

Record a "weird" mongodb process exit event and mongodb process exit event In shell, the mongo process is started through mongo args &. After logging out of shell and re-login, the mongo process is found to be gone. The following output is found in

The ultimate goal of data replication is to synchronize the data of one server with the data of another server, which can achieve data redundancy or load balancing of services. A master server can connect multiple slave servers, and the slave server

Principles of MongoDB replica set (I) and principles of mongodb Replication References Official Website: www.mongodb.org Chinese community: www.mongoing.com Online Tutorial: https://university.mongodb.com/ Mongodb supports the traditional

SQL is required. Note chapter 17th to create and manipulate tables. SQL is required.17.1 create a table There are two ways to create a table.(1) Most DBMS have interactive table creation and management tools(2) tables can also be directly

SQL is required. note Chapter 1 use subquery. SQL is required.11.1 subquery Query any SQL statement is a query. However, this term generally refers to a SELECT statement.SQL also allows you to create subqueries, that is, queries nested in other

Entity Framework object Framework formation journey-Entity Framework based on generic warehousing model (1), entityframework I haven't written a blog for a long time, and some readers often ask some questions. However, I have been very busy recently.

Export and Import of table structures and table data in PL/SQL Developer, and tables in developerExport table structure: Tools --> Export User Objects (Export User object) --> select the table to Export (including Sequence) -->. in the SQL file, all

Oracle 12c agent install for windows, oracle12c   There are two methods to deploy the agent in Oracle EM12c: one is to install the agent "push" directly to the managed end through the EM12c console through ssh, this method is relatively simple on

Run python on ubuntu to connect to pg. the following error occurs: ImportError: No module named psycopg2, ttupythonRun python on ubuntu to connect to pg. The error ImportError: No module named psycopg2 is returned.Root @ pgproxy1 :~ #