Oracle

Oracle8.1.X cannot run on P4 machines We haven't met P4 in our lab. Appeared on Xinhuanet. I encountered this problem when I went to Xinhua News Agency to build the e5 demo environment. Run the oracle installer, just like the dongle not detected by

OracleThe pl/SQL code in involves two execution engines, one dedicated to processing standard SQL statements, and the other Process Code for processing pl/SQL, cpu overhead is usually caused by engine switching. For example, the difference between a

Introduction: oracle DatabasePatch Is to patch the software, which is equivalent to giving a warning, and is crucial to the stable operation of the system. This article describes in detail and systematically the classification, installation, and

OracleDatabaseUnique ConstraintAndUnique IndexThe difference is what we will introduce in this article. When using TOAD to operate Oracle databases, we will notice four types of constraints when creating constraints: Primary Key, Check, Unique, and

Solutions to ORA-16014 errors1. Problems and SolutionsSQL> select status from v $ instance;STATUS------------MOUNTEDSQL> alter database open;Alter database open*Row 3 has an error:ORA-16014: log 2 serial number 27 Unarchived, no available

  It is often asked whether the conditional writing sequence of the Where clause in oracle has an impact on SQL Performance. My intuition is that if this order has an impact, Oracle should have been able to achieve automatic optimization for a long

1. Combination of LOOP and IF in loop LOOP CasesDeclareX number;BeginX: = 0;Loop -- start of loopX: = x + 1;If x> 3 then -- cyclic bodyExit;End if;Dbms_output.put_line ('value of inner x '| x); -- cyclic bodyEnd loop; -- end loopDbms_output.put_line

Use RMAN to configure automatic Incremental Backup in centosSystem: centos 5.5Database: oracle 11gR2 1. Backup PolicyPerform level 0 incremental backup on SundayPerform Level 2 incremental backup on MondayPerform Level 2 incremental backup on

Modify the maximum number of connections by default of 150 in oracle # sqlplus/nologSQL> conn/as sysdba SQL> show parameter processes; name type value =----------- ------------------------------ aq_tm_processes integer 1db_writer_processes integer

Oracle TnsPing is correct, pl/SQL ora-12154 cannot resolve the resolution of the specified connection identifier to tnsnames in C: \ oracle \ ora92 \ network \ ADMIN \ SAMPLE. copy the ora file to C: \ oracle \ ora92 \ network \ ADMIN and try again!

Resolved ORA-28002: the password will expire within 1 days symptom Description: Login oracle 11g ERROR: ORA-28002: the password will expire within 1 days alarm information: ERROR: ORA-28002: the password will expire within 1 days Cause Analysis: In

The following describes the concepts and operations of partition tables in oracle table partitions: concept of table partitions in Table spaces and partition tables specific roles of table partitions Advantages and Disadvantages of table partitions

The Oracle database fuzzy query statement is easy to ignore: the cause of the null record problem: the SQL statement is as follows: select count (*) from test; the result is 1390. select count (*) from test where bb not like '% disable %' result 393.

Differences between PreparedStatement and statement 1. PreparedStatement is pre-compiled, which greatly improves the efficiency of batch processing. It is also called JDBC Stored Procedure 2. It uses Statement objects. When only one-time access is

The Archiving mode of the rman experiment involves backup, normal shutdown, and recovery of lost data files. 1. Create a backup [SQL] RMAN> backup database plus archivelog; [SQL] hr @ ORCL> create table tt (name varchar2 (20); Table created. hr @

When some partitions in a partition table are unavailable, the statistical information collection becomes invalid. A specific requirement is met by the customer. The tablespace of some partitions in the Partition Table is OFFLINE, and tb leads to an

The Oracle VM Server Installation manual briefly describes the installation process of the Oracle VM Server. Note that the upgrade operation is supported only in VM 3.0 and later versions. Therefore, you cannot upgrade VM 2.2 to the current version.

To export (import) the oracle import and export documents in detail, use % ORACLE_HOME %/db_1/BIN/exp.exe(imp.exe) to configure the environment variable path, and then directly use the exp command Export ----------------------------------------------

This problem has been encountered in the recent access to BLOB fields in the Oracle database. You need to store a file or file stream in the Oracle database. Oracle8 provides Blob and Clob to store binary big object data, but it and Java. SQL. blob

Delete database-command method-drop database Method 1: Use the DBCA graphical interface. Method 2: run the following command-LINUX: SYS @ bys1> startup mount exclusiveORACLE instance started. total System Global Area 631914496 bytesFixed Size 133836