Oracle

Accidentally delete tablespace (with backup), use Backup control file recovery First, the simulation environment 07:59:14 sql> Select COUNT (*) from SCOTT.DEPT2; COUNT (*) ---------- 12 07:59:50 sql> drop tablespace lxtbs1 including contents

Specify a partition in addition to using the partition name, many times you can use a for statement. This article describes the ORA-14702 error encountered while testing the for statement. Still use an example from the previous article: sql>

1, the structure of the V$sqlarea table Sql> desc V$sqlarea is the name empty? Type ----------------------------------------- -------- ------------------------ Sql_text VARCHAR2 (1000) Sql_fulltext CLOB sql_id VARCHAR2 (13) Sharable_mem

The cache in ASP.net 2.0 provides support for SQL dependencies, meaning that when the data in a table or row in a SQL Server database is changed, the page in the cache is invalidated, otherwise the page output remains in the cache. This is really

Oracle permissions are divided into system permissions and object permissions; System permissions mainly refers to the user's use of the system permissions, such as Create session, create TABLE, create any table, and so on, here to specifically

4.4 Oracle Table Space Management The ORACLE table space files are placed in directories such as $oracle_home/oradata/opt/oracle/product/10/oradata Oracle table space supports hot swap That is, when the Oracle runtime discovers that the

1. Full recovery Restores the database to the last commit state before failure through backup, archive log, current redo. (typically used for media failure) --Archive mode 1) Full recovery 2) Incomplete recovery --Non-archive mode 1) revert to

When using Sqlplus to connect to Oracle databases, there are always???? A class of characters, mainly because the server and client language settings are not the same. In the Japanese environment, the server-side setting is Ja16sjis, the client

General way to save test information Create Related data tables Create datasheet testinfolog, and serial number Seq_testinfolog Refer to the Testinfolog.sql in the current directory and run this part of the script. Create Test Information Save

1, install GLIBC Compatibility Pack, find the following RPM file installation compat-glibc-6.2-2.1.3.2.rpm compat-libs-6.2-3.rpm compat-egcs-6.2-1.1.2.14.rpm 2, modify your. Bash_profile Add the following two lines Export ld_assume_kernel=2.2.5

The recent derivative work, from several tables into a table, where the data may be duplicated, so the data before the import to compare. Method One: I use the group by have Count (*) >1 to extract the duplicate data, and then the artificial

Oracle Common Startup methods: 1, Startup Nomount Non-installation startup, this way to launch executable: Rebuild control files, rebuild the database read Init.ora file, start instance, that is, start the SGA and background process, this startup

[Q] How to qualify a specific IP Access database [A] You can use login triggers, CMGW, or add a Protocol.ora file under $oreacle_home/network/admin (some OS may be. Protocol.ora), 9i can modify Sqlnet.ora directly: Add the following:

Before doing a system, encountered a problem! Today, I accidentally found the solution to this problem and posted it!!! Problem Description: VARCHAR2 (4000) ABC; Intert into table_name (ABC) VALUES (' Here are 1500 characters ... '); Error:

create or replace procedure SYSRINGALL_TEST isall_tmp_name char(30);all_name char(30);beginif all_tmp_name is null thenselect 'ring_all_old_'||to_char(sysdate,'yyyymm')||'_tmp' into all_tmp_name from dual;end if;if all_name is null thenselect

Methods of identifying statements that occupy more resources (4 methods) 1. Feedback from the test group and end users on issues related to slow response. 2. The implementation details are provided using the V_$sqlarea view. (Number of times to

Web development, no more than two points, one for the layout, one for the content. On layout, Perl's CGI module is powerful and easy to use, and can dynamically generate HTML pages in just a few lines. But the content, then will certainly use the

The data block (Oracle data Blocks), referred to as "block", is the smallest Oracle storage unit, and Oracle is stored in "block". A block occupies a certain amount of disk space. Notably, the "block" here is Oracle's "block", not the "block" of the

I. Loss of recovery of the inactive log file group: Because the inactive log file group indicates that the checkpoint has been completed (dirty data has been written to the data file). The database itself does not have database loss, and if the

One, what is the Oracle character set An Oracle character set is a collection of symbols that are interpreted as a byte of data, having a size and a mutual containment relationship. ORACLE's support for the national language architecture allows you