Database Administrator

Java implements Oracle Database Backup Today, we will paste an Oracle database backup feature that has been implemented very early. This feature was designed at the university stage: Import java. io. File;Import java. io. IOException; /*** Oracle

ORA-01093 troubleshooting The environment is the 10.2.0.5 environment of the DG of RAC + RAC. At that time, I opened the master and slave databases and wanted to start the MRP process (Real-time application). However, the 1093 error occurred when

Oracle OWB introduces series 1 introduction and use process OWB, Oracle Warehouse Builder, is a tool for oracle to implement data warehouses. To put it bluntly, it is to clean and convert data from many other databases and load it into a data

Oracle transaction processing and instance demonstration JDBC operation batch Deletion Transactions As the basic unit of logical processing, database operations are composed of one or more SQL statements. Of course, there are also non-database

HammerDB database pressure tool using simple steps, hammerdb database pressure Welcome to reprint, reprint please indicate the source: http://blog.csdn.net/notbaron/article/details/38879681 Simple Steps for using HammerDB database pressure

Mybatis batch inserts a large number of oracle data records to solve the performance problem. mybatisoracle Environment: mybatis + oracle11g r2 1. Use "direct path insertion" ("/* + append_values */" in the following SQL statement), and use the

Number of dynamic partitions exceeded hive.exec.max.dynamic.partitions.pernode,hive.exe c. parallel [Fatal Error] Operator FS_2 (id = 2): Number of dynamic partitions exceeded hive.exe c. max. dynamic. partitions. pernode. Hive> insert into table

Comparison of execution plan changes used by index_ss hint, index_sshint Comparison of execution plan changes used by index_ss hint Buffer indicates the number of memory reads in the current operation, including consistent read and current

Xin Xing uses mysqldump for Hot Backup and Xin Xing mysqldump The importance of backup is self-evident, especially for database administrators. There are many methods to back up data. I am not talking about them all here. Here I will talk about hot

One ORA-28000: troubleshooting the account is locked by the user, ora-28000lockedToday, my colleague reflected a problem, a test database modified the password, and changed the password used by the relevant application, still appear after a while

052 -- drop profile app_user, ocp052 -- 133. You created a profile APP_USER and assigned it to the users. After a month, you decide to dropProfile. Some user sessions are currently connected to the database instance and are usingAPP_USER

Data Source and connection pool, data source connection pool The data source is used to connect to the database and obtain the Connection object, which is expressed in java using the javax. SQL. DataSource interface. With the data source, we do not

Jmeter JDBC Request -- sqlserver JDBC driver configuration, sqlserverjdbc driver 1. Make a JDBC requestFirst, you need to know what the JDBC object is. Now SQL Server is used as an example to describe it. First, download the corresponding database

Oracle cloud control 12c how to modify the sysman password, 12 csysmanOracle Cloud Control 12c was deployed on a virtual machine a few days ago, and the login password was forgotten. The main reason is that Oracle-related Software provides stronger

SQL Server in the eyes of programmers-what does non-clustered index bring to us ?,Zookeeper I will not talk about some database concepts, so I can only use some practices to understand the meaning of these concepts. The use cases in the following

RAC Cache Fusion principle understanding, racfusionCache fusion. grd. drm. gcs. gesCache fusion1. RAC is a database running on multiple instances. It uses the Distributed Lock manager (DLM) to solve concurrency problems. Resources are shared among

Oracle data comparison (DBMS_COMPARISON) and dbmscomparison Today is. I feel ashamed to have received an invitation from csdn to apply for a blog expert. I have never been able to write anything since I changed my job. Today, one of my colleagues

Access and filter, accessfilter Access: indicates that the value of this predicate condition will affect the data access path (table or index ). Filter: indicates that the value of the predicate condition does not affect the data access path and

First known SQLITE3 database, first known sqlite3 DataBase, we have never touched the DataBase. What is the DataBase? It is a structured, integrated, and shareable unified data collection! Structured means that data is organized according to a

Python synchronizes windows Time and python synchronizes windows Time. Import OSCom1 = 'net use \\\\ 192.168.0.90 \ ipc $ PPss01! 123/user: administrator'OS. system (com1)Com2 = 'net time \\\\ 192.168.0.90/set/yes'OS. system (com2)Com3 = 'pause'OS.