Oracle

1. Querying for locks in the databaseSELECT * from V$lock;SELECT * from V$lock where block=1;2. Querying for Locked objectsSELECT * from V$locked_object;3. Query blockingCheck for blocked sessionsSELECT * from V$lock where lmode=0 and type in (' TM '

There are many name-related parameters in Oracle, sometimes confusing, what does this parameter do, and what is the difference between them?Let's take a look at what parameters are related to names. The parameter file has

Console access to Oracle:Windows platform Keyboard window+r input cmd Enter sqlplus enter prompt you enter username and password and then enterDesc: View Table structureDesc + table Nameset Line[size]{80|n}:size value defaults to 80 if the screen is

Table partitioning is an idea, and partitioning represents a technology implementation. When the size of the table over G can consider table partitioning, improve query efficiency, equalization IO. The Oracle partition table is the implementation of

This article organizes the concepts and operations of partitioned tables from the following aspects:1. Table space and the concept of partitioned tables2. The specific role of table partitioning3. Advantages and disadvantages of table partitioning4.

1 STARTUP Nomount1. Read the parameter file under the DBS directory under Environment variables (spfile/pfile)To find the order of the parameter files as listed above, read the priority level:Spfilechongshi.ora > Spfile.ora>initchongshi.oraIf none

1. Get HelpImp help=y2. Import a full databaseImp system/manager file=bible_db log=dible_db full=y ignore=y3. Import all of the tables, indexes, and other objects that a specified user or group belongs toImp System/manager file=seapark Log=seapark

There are several scanning methods under Oracle 10g, note that the last scan method will not be partitioned when the columns of the partition are computed. This is the same as evaluating an indexed column, which results in an unusable index.--Scan

1. Upload the patch pack to Oracle Server, unzip, install[Email protected] tmp]$ Unzip Linuxx64_12201_database.zip2. Check the current versionSql> select * from V$version;BANNER-------------------------------------------------------------------------

Oracle external tables can quickly import large amounts of data into the database, the external table is created using the following steps:　　1 Create a directory: Users must be created with the SYS user to hold external data files.Create directory

650) this.width=650; "src="/img/fz.gif "alt=" Copy Code "style=" border:0px; "/>Create or replace procedure proc_test is  --description: Deletes the specified character in the field ( Enter Chr (13), newline Chr

--Log in as DBAC:\users\administrator>sqlplus/as SYSDBA--Create UserSql> create user bfzg0828 identified by bfzg0828 default Tablespace users quotaUnlimited on users;--Grant the connection role, the resource role to the userSql> Grant

1. Please enter the user name: Sys as SYSDBA2. Enter Password: 1234563. Creating User: Create users admin identified by admin;4. Authorization Establishment table: Grant CREATE table to admin;5. Authorization to delete the table: Grant drop any

Oracle Linux 6.3 has been announced for nearly 2 years, its features have been greatly improved, enhanced KVM, file volume online RESIZING,LVM support RAID4, 5, 6. Supports many other virtual CPUs as well as larger memory, which can be detailed in

Read the online many of the Oracle field split instance, but did not fully meet the requirements, perhaps I am not good enough to understand the level, if there is a great God know and willing to tell me, you can private messages to me, here sincere

MSSQL2008R2 Link ORACLE 11:To create a link:exec sp_addlinkedserver ' dblink_oracl ', ' ORACLE ', ' msdaora ', ' ORCL120 'Among them, ORACL120 for the local installation of the Oracle driver, after Tnsnames.ora configured the link string operation,

Meta-data definition1 CREATE OR REPLACETYPE Mdsys. Sdo_geometry asOBJECT (2Sdo_gtype Number,3Sdo_srid Number,4 Sdo_point Sdo_point_type,5 Sdo_elem_info Sdo_elem_info_array,6 sdo_ordinates Sdo_ordinate_array,7MEMBERFUNCTIONGet_gtype8

When Oracle's DML operational performance is impacted, it is possible to consider improving new energy from the following factors.1) Efficiency of the WHERE clauseThe WHERE clause whether the conditional association uses the index, the statistical

The basic operational directives for Oracle databases are described in the previous article: Add, delete, change, check the following for database managementIntroduction to Database RolesData Administrator: there is at least one DBA for the database

Step One: Create a backup script Oraclebackup.batFirst create a backup bat file, create a new backup directory oraclebackup under D, copy the EXP.EXE from the Oracle installation directory to this directory, and create a new text file