Oracle

Create a tablespace in Oracle and the user's Oracle SQL code -- create a tablespace create tablespace epet_tablespace datafile 'e: \ app \ Administrator \ oradata \ coolick. dbf 'size 100 M autoextend on next 32 M maxsize unlimited logging extent

In oracle 11g r2, we found that the traditional exp could not export an empty table, and then looked at it and found that the following steps are required to take notes. Oracle 11g adds a parameter: deferred_segment_creation, which indicates that

The basic function of transactions in the database is to switch the database from the consistent state to another consistent state, the transaction isolation level defines how sensitive a transaction is to the modifications made by another

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Linux after the installation of oracle restart can not log on to the database ORA-01034: ORACLE not available solution yesterday installed the database, after the installation can be used, start today can not be used, prompt ORACLE not available,

SQL code -- Create table (create partition table) Create table BILL_MONTHFEE_ZERO (www.2cto.com SERV_ID NUMBER (20) not null, BILLING_CYCLE_MONTH NUMBER (6) not null, DATE_TYPE NUMBER (1 ), ACC_NBR VARCHAR2 (80) partition by range (partition)

1. Choose "start"> "Settings"> "Control Panel"> "Administrative Tools"> "services" to stop all Oracle services. 2. Start-> Program-> Oracle-OraHome81-> Oracle Installation Products-> Universal Installer uninstalls all Oracle Products, but the

Oracle basic configuration Oracle 10g create an Oracle listener: [start] --> program --> Oracle-OraDb10g_home1 --> Configuration and Migration Tools --> www.2cto.com Net Configuration Assistant --> Listener Configuration --> next --> Add -->

When you roll back to fisrt (), note that you need to move the cursor to the first line before using previous (); package com. trs. util; www.2cto.com import java. util. calendar; import java. util. date; import java. util. properties; import java.

Keywords: oracle to_char, to_number, to_date usage TO_CHAR is to convert the date or number to the string TO_DATE is to convert the string to the date type conversion function in the database TO_NUMBER to convert the character to the number TO_CHAR

Operations on the Oracle monitoring database 1. Check SQL _idselect a from the view gv $ session. SQL _id from gv $ session a where. USERNAME = 'dbrwdadm '---- the database user performing the operation and. OSUSER = 'L. jqiao-pc' ---- system user,

HASH partitions in Oracle table partitions allow users to partition data that does not have a logical range. by executing the HASH function on the partition key, the stored partitions are evenly distributed to different partition syntaxes.: [SQL]

1. What is RMANRman (Recovery Manager)? It is an important tool for DBAs after Oracle 8i. It is generally located in the $ ORACLE_HOME/bin directory,It is mainly used for backup, recovery, and recovery. You can achieve full recovery and Incomplete

ORA-01103 error parsing 1, Environment Introduction: this is a test library, I Will parameter files, control files, data files all deleted after doing data recovery, but I restored the control file and parameter file back, but the database but how

Table access between users and account locking and unlocking 1: Table access between users: [html] For example: wangzihu users want to access users tables in system users. The command is as follows: www.2cto.com grant select on users to wangzihu) if

Use cursor cur_2 is select. cust_name from ea_cust.cust_info a; cust_id varchar2 (100); begin open cur_2; loop fetch cur_2 into cust_id; exit when cur_2 % notfound; NULL; end loop; close cur_2; end; -- takes 48 seconds 2. Implicit cursor declare

Primary key conflict-a table can have two primary keys. A new primary key statement can have two primary keys in the table: primary key for table xs 'is not unique: first, the two fields are converted into the primary key, which is

Navicate9.0 + connection to Oracle 11g error Description: When the connected host is localhost, this port has been monitored, but it is actually already monitored,The ORA-12737 set CHS16GBK error occurs when you change localhost to the current IP

ORA-01422 and ORA-01403 error fix AFTER adding a 'after LOGON database' trigger, the following error snippets are found in the log: 1ORA-00604: recursive SQL Level 1 error 2ORA-01422: the actual number of returned rows exceeds the number of

Oracle data recovery scenario 2-simulated redo log loss (1) Link: Oracle recovery scenario 1-simulated data file damage or loss http://www.bkjia.com/database/201206/137602.html Database recovery after oracle redo log (current or non-current log)