Oracle

Another example of "12c more consumption than 10g index back-table" case, colleagues in 12c run the buffer get is very high, but in 10g run a low buffer. Doubt whether the 12c optimizer has a problem. This 10g environment and 12c environment, the

Remember that PHP supports Oracle connection functions php.ini files in the configuration, remove; extention = Php_oci8.dll, remove the preceding semicolonYou can restart Apache,If not, we'll copy the Php_oci8.dll in the PHP directory to the system3

A friend found me, said he did the wrong operation of the production library, resulting in database anomalies, please I help processing, the/U01 directory modified users and permissions, resulting in the database can not log on, but the business

Modify Oracle Instance name System Environment: CentOS 6.5Oracle Version: 10.2 1, check the original database instance name$ echo $ORACLE _sidOrcl $ sqlplus/as SYSDBA> select instance from V$thread;INSTANCE-------------------------------------------

First, the phenomenon of database deadlockFirst confirm the login interface SYS/DBAIs that the program does not return, like the software card dead second, the principle of deadlockIs that an operation completes the uncommitted completion commit,

Has Netizen consults the database to start the report ora-01092:oracle instance terminates. Force disconnect, request help handlingDatabase version Trace file D:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_5648.trcOracle Database 11g

Use the following statement: O_char (pubtime, ' yyyymmdd HH:mm:ss '), for example: The code is as follows Copy Code Select Id,to_char (pubtime, ' yyyymmdd HH:mm:ss '), content from Bj_ref.gz_twinfo_ref where user_id=2603

Received technical support requests, WIN 2003 NTFS format file system, Oracle 8.1.7 version, the host restart, the database can not start normally, offline DataFile 15, the database open successfully, but datafile can not normal online, The error is:

There are three types of lob: Blob:binary Large Object Binary Large ObjectsClob:character Large Object single character large objectsDouble-byte Character Large Object Double Byte character large objectsLarge data types in Oracle:Long:

Advantages of using partitions: 1. Enhance usability: If a partition of a table fails, the data in other partitions is still available; 2, Maintenance Convenience: If the table of a section of the fault, need to repair the data, only repair the

Oracle An RDBMS is used in practice for various types of related locking mechanisms, andOracle latch is one of the most frequently used, and the following articles are mainly about the concept of latch (latch) and understanding the implementation of

Recently because to write a project interface, the need to remotely connect the Oracle database, just at the beginning because I installed a local MySQL, so used to connect the local MySQL, the interface is generally finished in Tomcat test under,

It is very important to develop database applications and choose a good database. This article compares SQL Server with Oracle, DB2 three kinds of database from some aspects, provides some reference for you to choose the database. Open SQL

Overview Procedures and functions in pl/sql, often called subroutines, are a special type of pl/sql blocks that can be stored in a database in a compiled form and invoked for subsequent blocks. Same point: A program that completes a specific

//***********************************************************************Function name: Of_zy_yzfy for N_medicare_minihisFunction Note: The doctor's advice should be submitted to the doctor after entryFunction arguments:1.s_yb_zy_yzfy Astr_jyxx

Problem description Plsql developer executes a section of SQL error: After checking alert log detailed error message is: Ora-07445:exception Encountered:core Dump [EVAOPN2 () +128] [SIGSEGV] [Address not mapped to object] [0x000000000] [] []

Objective Recently do projects need to import a batch of 3000多万条 POI data to Oracle database, simple insert import speed is too slow, use SQLLDR batch import 3000多万条 data spent 20 minutes, speed can also, now share to everyone, the specific methods

Recently a friend accidentally caused a very big accident, I almost took a lawsuit. In doing database migration, remote misoperation deletes the original database of several databases, such as system initial installation, and the disk space usage is