Oracle

ODBC or PowerBuilder's own DB profile or private interface to the database, but there are still many users who are unable to connect to the database by this method, which may be the cause of PowerBuilder itself, For example, the option to install

The effect of high water level and the performance of large concurrent inserts The rule summary of finding available blocks when inserting data blocks: High water level and low high water level: the state of the data blocks existing between the

High water level concept: All Oracle segments (segments, here, in order to understand the convenience, it is recommended that segment as a synonym for the table) has a cap to accommodate the data in the paragraph, we call this cap "high water mark"

Nub Backup Oracle can perform Oracle backup and recovery operations by invoking the Oracle RMAN utility through the NetBackup graphical interface or the Oracle command-line interface. In addition, Oracle Archiving and restore operations can be

Scheduler Use Detailed: Create Scheduler: BEGIN Sys.dbms_scheduler.create_schedule ( Repeat_interval => ' freq=daily; byhour=15; byminute=0; Bysecond=0 ', Start_date => Systimestamp at time zone ' +8:00 ', End_date => To_timestamp_tz (' 2014-03

The Dataguard configuration is as follows: Prod main library, sbdb for standby Log Group 1-3 Group is Redolog file,4-6 Group is standby log During the creation of the standby log library, the recovery from the data transfer to the standby is

Select E.tsname tsname, sum (E.PHYRDS-NVL (b.phyrds, 0)) reads, SUM (E.PHYRDS-NVL (b.phyrds, 0)) (SELECT EXTRACT (Day from E.end_interval_time-b.end_interval_time) * 86400 + EXTRA CT (HOUR from E.end_interval_time-b.end_interval_time) * 3600 +

Oracle 9i can configure a number of parameters such as channels, backup retention policies, and so on, can be used more than once, and the information in the settings does not affect the reset in the script. RMAN default configuration parameters,

Example --Submit once for each processing of 10,000 articles Loop INSERT INTO T2 SELECT * from t1 where rownum Delete from T1 where rownum V_rowcount: = Sql%rowcount; Commit Exit when V_rowcount End Loop; Additional sql% four

Today, the test found a stored procedure executing the report ORA-01745: Invalid host/bound variable name error The error statement is the delete tbl_temp_01system where writetime >: sysdate The reason for this error is: sysdate This binding

The Nmon tool is a free, IBM-supplied tool for monitoring AIX systems and Linux system resources. The tool can monitor the performance of the system in real time, collect the server's system resource consumption and output a specific file, and

As an Oracle Database developer or DBA, you often experience the problem of trying to create a unique index on a column or column in a library table, prompting ORA-01452: You cannot create a unique index and find duplicate records. Here we take

With the popularization and improvement of the application of computer network, Oracle database application is changing in every field, it has excellent performance and convenient operation, which is one of the most favored in the database system at

The refresh of materialized views is actually not fundamentally different from normal SQL execution, so you can customize the refresh operation by creating triggers on materialized views. Just two days ago, someone asked me on the blog, if you add

Oracle Trace Files Oracle trace files are grouped into three types, one is the background alarm log file, which records the activity of the background process during startup, shutdown, and running of the database, such as table space creation,

To do a bulk INSERT database, you first need to know the syntax that the database supports for bulk INSERT. The syntax for bulk inserts for each database is different, and I introduce two.Mysql:1, INSERT into table_name (id,name) VALUES (1, ' Zhang

Nine, advanced query (group, sub-query)To inquire about an upgraded version:Need to use three sheetsEmployee table:DESC EMPEMPNO Employee NumberENAME Employee NameJob Employee PositionsMGR Boss Employee NumberHireDate Employee Entry DateSAL Employee

1. preusers.sh Script#!/bin/bash#purpose:create 6 groups named  ' Oinstall ', ' dba ', ' asmadmin ', ' asmdba ', ' asmoper ', ' Oper ', plus 2 users named  ' Oracle ', ' grid '. #Also  setting the  Environment#variable for oracle user. #variable

turn from: http://blog.csdn.net/ahngzw77/article/details/8652722 for SQL spool data, it is best to define your own format to facilitate direct import of the program, SQL statements such as:Select Taskindex| | ' | ' | | commonindex| | ' | ' | |

Tip: Configure Microsoft LoopBack Adapter as your system's primary network adapter. Workaround: Add Hardware, Control Panel, (Win7 and then no hardware added, you can enter it in cmd and enter Hdwwiz.exe to turn on adding hardware) I've also