The statements used to query user tablespace in Oracle are not complex. The following describes the implementation statements used to query user tablespaces in Oracle.
The following describes how to query user tablespaces in Oracle:
◆ Oracle query
In the process of learning oracle databases, oracle authorization is a key knowledge. The following describes how to grant permissions to three oracle databases. We hope this will help you.
1) Role authorization:
A> Create A role:
Will Oracle system users encounter problems when logging on to the database? The actual permissions of Oracle system users are analyzed and discussed below for your reference.
Previously, a new database was created and logged on through pl/SQL
In oracle databases, access permissions can also be improved through the oracle default account. The following describes an example of permission escalation through the oracle default account, we hope that you will be enlightened on Database
The following describes the Oracle STARTUP script, which can be used for your reference. We hope you can have a better understanding of the Oracle database.
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#!/bin/sh
cmdname="restart"
#
The following describes how to use SQL statements to view the generation time of Oracle table records. If you have encountered a similar problem before, take a look.
Sometimes you need to check when the record is created in the table, some will use
Oracle operating system authentication and password file authentication are two methods of oracle. The following describes the application of oracle operating system authentication and password file authentication for your reference.
Summary first,
The statements used to create tables and indexes in Oracle are basic knowledge. The following describes how to create tables and indexes in Oracle. We hope this will help you learn how to create tables in Oracle.
Create a table in Oracle
create
We often use oracle time addition and subtraction operations. The following describes how to add and subtract oracle time. If you have encountered oracle time addition and subtraction problems, take a look.
Addition
Select sysdate, add_months
Oracle deletes archive logs, which is frequently used. The following describes how to delete archive logs in Oracle.
When the Oracle archive log is full, you cannot log on to Oracle normally. You must delete some archived logs to log on to Oracle
Example of using the over function in Oracle
Sum (sal) over (partition by deptno order by ename) Department continuous sum, -- the salary of each department "continuous" sum,
Environment: windows 2000 server + Oracle8.1.7 + SQL * plus
Objective: To
Guidance:BecauseOracle Database BackupThere are three methods, each of which has different recovery features. Therefore, you should integrate database and file system backup, integrated logical backup and physical backup.
I. Backup Policy
1. At the
We will teach you the followingLarge Oracle DatabaseDesign method, hope to help you.
1. Features of super large systems:
1. Generally, the number of users processed exceeds 1 million, and the number of users processed exceeds 10 million. The data
InORACLEThe process in the "killed" status locks system resources for a long time and does not release the resources. There is a better way than restarting the database.Operating SystemForcibly kill those processes.
1. The following statement is
Oracle DatabaseOfShared poolIt is mainly composed of data_dictionary that stores data dictionaries, and library cache that stores SQL and PL/SQL code and execution plans. It also includes several other buffers for different system features and
Oracle DatabaseRelatedSynonymSome of the knowledge is what we will introduce in this article. First, let's take a look at a statement, as shown below:
Create synonym table_name for user. table_name;
The first user_table and the second user_table can
OracleArray typePassed as a parameterStored ProcedureThe example of calling it with Java is what we will introduce in this article. Next we will introduce this process.
Use Oracle Database 11g Enterprise Edition Release 11.2.0.1.0. steps:
1. Create
Oracle DatabaseSwitchArchive ModeOperations and some related knowledge of the archive mode is what we will introduce in this article. Next we will begin to introduce this part of content. First, execute the following code:
JDBC calls the Oracle Stored ProcedureExamples of returning result sets and obtaining output parameters are the main content we will introduce in this article. Next we will introduce this process. Let's take a look at it.
Package xx. qq. app;
Linux 64-bitInstallOracle 10gHourE2eme ErrorThe solution is what we will introduce in this article. The detailed error log file is as follows:
INFO: reference to `ldxnbeg’
/app/oracle/product/10/db_1/lib32//libnls10.a(lxecg2i.o)(.text+0×231)
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