Label:Operation of the database, often error operation, yesterday after the update operation found that the update is wrong, only to find ways to recover data, now tidy up First step: Query the time to perform the update operation Select from V$sqlarea R ORDER by r.first_load_time Desc; Execute the above SQL statement in the Sql_text field to find the
For simpler tables, the amount of data is not a very much table, you can use a simple SQL statement to back up
CREATE TABLE t_fa_cat_20121207 as SELECT * from T_fa_cat
Create a new table and save the data
INSERT INTO T_fa_cat select * from t_fa_cat_20121207
To import the original backed-up data into a table to recover data
How to update multiple fields in a table on Oracle to another tableUpdate a
// Dynamic link library path
$ Oracle installation path $/bin/oracle. dataaccess. dll
// Namespace reference
Using Oracle. dataaccess. client;
// Rough description of the Encoding Process
Int rowscount = 10; // it is assumed that 10 records need to be deleted.
Oracle. dataaccess. Client. oracleconnection connection = n
Starting January 18, 2005, Oracle plans to provide critical patch updates quarterly. These comprehensive patches, provided through Metalink, will address significant security vulnerabilities, and include fixes that customers may apply or prerequisite procedures for applying security fixes, or both.
OTN: Why does Oracle have to start quarterly critical patch updates?
Davidson: Customers tell us that they p
Oracle 11g update PSU detailed steps
Oracle releases the latest patches every quarter. For production O M personnel, regular system upgrade and patching are indispensable in daily work.
Compared with the previous versions, Oracle patching has become relatively simple, and the method for processing PSU has also changed
Reprinted from the Heaven of stealingMotivation:You want to do insert/update directly with an SQL statement in Oracle.DescriptionWhen writing SQL statements, we often encounter a large number of simultaneous insert/update statements, that is, when there is a record, it is updated (update), when no data exists, insert (insert).Actual combat:Next we have a task, th
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Oracle Database 10g Enterprise EditionRelease 10.2.0.5.0-Prod
Dave:/u01/app/oracle/product/10.2.0/db_1/OPatch>./opatch version
Invoking OPatch 10.2.0.4.9
OPatch Version: 10.2.0.4.9
OPatch succeeded.
Ii. Update OPatch tool Methods
The method for updating the OPatch tool is simple. You only need to d
This two days to the new colleagues to arrange a job, that is, to do an update cascade update, in the actual operation found a problem. For Oracle's newer syntax, most people, especially those who have studied SQL Server, have a lot of questions about Oracle updates when they use Oracle. Write down for future reference
How to update a patch (Rolling Patch) in the Oracle RAC EnvironmentThe Oracle RAC database environment has many similarities and differences with the single-instance database environment. You can use opatch to update database patches. However, there are several different update
Oracle note (7) data update, transaction processing, data pseudo column 1. Data Update operations in the DML operation syntax, in addition to queries, there are also database update operations for data, the data update operation mainly refers to adding, modifying, and deleti
An in-depth analysis of the entire UPDATE process from birth to death is a question that a brother of Oracle once asked me. Some people later asked me this question: use the Internal principles of ORACLE to describe the following processes: 1. sqlplusgyjgyj @ orcl2, updatet_gyjsetnamegyj1whereid1; 3. commit; 4. exit to view the problem
An in-depth analysis of the
this case, you need to download a later version of OPatch from MOS separately and update the OPatch under ORACLE_HOME before you can continue the upgrade.
SQL> select * from v $ version whererownum = 1;
BANNER
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Oracle Database 10g Enterprise EditionRelease 10.2.0.5.0-Prod
Dave:/u01/app/oracle/produc
Many friends familiar with SQL server often make a mistake when they come into contact with oracle, that is, they always think that oracle also has the structure of update from. The from statement does not exist in the update Statement of oracle.
We have briefly introduced t
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Oracle Database 10g enterprise editionrelease 10.2.0.5.0-Prod
DAVE:/u01/APP/Oracle/product/10.2.0/db_1/opatch>./opatch version
Invoking opatch 10.2.0.4.9
Opatch version: 10.2.0.4.9
Opatch succeeded.
Ii. Update opatch tool Methods
The method for updating the opatch tool is simple. You only need t
Oracle
Discussion on Oracle Job (Job) Update next_date
The author of this article: Kamus (Kamus@itpub.net)
Summary: This article analyzes the mechanism for modifying the next execution time during Oracle job execution through experiments and event tracking.
Some people ask when Oracle's job will determine the
Abstract: Oracle Data Mining (ODM) is a data mining and prediction analysis engine in a database, allows you to create and use advanced predictive analytics models on data that can be accessed through your Oracle Data Infrastructure.
I recently got an Oracle Data Mining (ODM) update from
a SQL statement, such as if for, makes it a SQL block that accomplishes a certain function 4. Four types of objects Table: tables, consisting of rows and columns, are also called fields, and each row is full data for the day of the table. View: A table or part of a table or a complete map, like a table in the mirror, the virtual image in the mirror is the view Out of common table and view two objects, Oracle also supports the following four types of
Update multi-row data (oracle)Note: The notes summarize several update Methods encountered at work and the applicability of various methods. 1. single Table update solution: use the standard update syntax to perform a stable and efficient
The following articles mainly introduce Oracle cursor deletion and UPDATE. We all know that in PL/SQL, UPDATE and DELETE statements can be used to UPDATE or DELETE related data rows. An explicit Oracle cursor is used only when multiple rows of data are required.
PL/SQL allow
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