Oracle

Host IP Address: 10.1.1.x Gateway: 10.1.1.1Virtual Machine node IP address (created on local workstation): 10.1.1.101~253 Gateway: 10.1.1.1Teacher Machine (VNC): 10.1.1.250Teaching Production library ip:10.1.3.3 do not use this virtual device.Shared

About Oracle:1, Oracle database software-Install the OS on the2, the acquisition path of software, business sales strategy.3. Database version: 9i--10%10g--65%11g--25%--new systems are common12c--Latest Version8i--internet9i10g--gird

Use the Dept table under the Scott account;SELECT * FROM Dept order by Deptno;Ten ACCOUNTING NEW YORKDALLASSALES CHICAGOOPERATIONS BOSTONFor demonstration convenience, insert a piece of data:INSERT INTO Dept (Deptno, dname, loc) VALUES ("SYSTEM", '

--View disk statements that consume the most disk read and write ratesSELECT *From (select v.sql_id,V.child_number,V.sql_text,V.elapsed_time,V.cpu_time,V.disk_reads,Rank () Over (order by v.disk_reads Desc) Elapsed_rankFrom V$sql v) awhere

--View disk statements that consume the most disk read and write ratesSELECT *From (select v.sql_id,V.child_number,V.sql_text,V.elapsed_time,V.cpu_time,V.disk_reads,Rank () Over (order by v.disk_reads Desc) Elapsed_rankFrom V$sql v) awhere

We need to delete the child nodes when we delete the parent node, and the child nodes are also deleted, so we need to loop the function until there are no child nodes.Print out all child nodes under a node as followsTable structure is a traditional

Row Share (RS)This lock, also called a subshare table lock (SS), indicates then the transaction holding the lock on the table have locked Rows in the table and intends to update them. A row share lock is the least restrictive mode of table lock,

The column command can be used to format the columns, including the column headings and column data, and the syntax for the command is as follows:Col[umn] [{column | expr} [option ...]]Column name specifiedOptions specifies one or more choices for

oracle004Startup and shutdown of Oracle-related programs: off: EM, Isqlplus-->listener--Database Isqlplusctl stop, emctl stop Dbconsole--&G T;lsnrctl stop-to--there are two ways: 1. Dbstop 2. Sqlplus As/sysdb--shutdown immediateOpen:

1, the optimization of the sql,sql with the Hotspot table execution time is too long to hold the latch of time. For statements that return fewer results, you should check the use of indexes and partitioning criteria. For example, we query tables

1.how to find invalid status stored procedure and recompile them?SELECT object_name, status from user_objects WHERE object_type = ' PROCEDURE ';Alter procedure Schme.procedurename Compile;Lack of practice is not a complete study of learning,

Table 5-4 Oracle Database Background Processes Process Name Description Database writer (DBWN) The database writer writes modified blocks from the Database buffer cache to the data files. Oracle

Necessary component InstallationActivePython python Windows Support components Unix-like systems have their own Python components download "Baidu ActivePython"oracle_client Oracle Database Link Component "Cannot link to database if not

In Oracle, you can control which IPs can connect to the database and which IP cannot connect to the database. In 9i and later, simply set the allowed IP and banned IP, modify Sqlnet.ora is the best and fastest method1. Modify the Sqlnet.ora fileIn

1. User-Createdsql> CREATE USER rusking2 identified by rusking3 Default Tablespace users-specifies that the defaults table space is users. If you use the system default Tablespace, you can actually do so without specifying it.4 QUOTA 10M on the

---create waterfallCreate or replace type Waterfall is Object (name Varchar2 (), height number);--Create RiverCreate or replace type Rivertest is Object (name Varchar2 (), length number);Create or replace procedure Anydatatest/** This example

using the Sqlplus spool command  Operation Steps1. Create a new script file and store it, such as D:\spool.sql, with the following code Set echo off-when executing an SQL script with the start command, displays the SQL statement being executed in

ORACLE11G manual database creation  Step 1: Directory -- Database file directory $ Cd $ ORACLE_BASE/oradata $ Ls -- View the SID of an existing database PROD $ Pwd -- Check the absolute path. /U01/app/oracle/oradata $ Mkdir HYL $ Ls-l -- Production:

ORACLE10G manual database creation  Step 1: Directory -- Database file directory $ Cd $ ORACLE_BASE/oradata $ Ls -- View the SID of an existing database PROD $ Pwd -- Check the absolute path. /U01/app/oracle/oradata $ Mkdir HYL $ Ls-l -- Production:

Oracle10gLsnrctl does not reflect that the database cannot be connectedSymptom Description: The oracle version used is 10.2.0.1.0 in linux. If lsnrctl status is entered on the command line interface, no response is returned. If lsnrctl stop is