what is oracle discoverer

The following articles mainly describe the actual Oracle optimization query operations. We first assume that LARGE_TABLE is a large table), and the username column does not have relevant indexes, what statements are used in actual operations? The following describes the statement: SQL>SELECT*FROMLARGE_TABLEwhereUSERNAME=‘TEST'; QueryPlan SELECTSTATEME

What version of Linux should Oracle be installed in? Today, I want to install Oracle 11g r2 on my Ubuntu. I have gone through some tutorials on the Internet and found the Operating System Requirements on the Oracle official website. The content is as follows:Operating System

The following articles mainly describe some things worth your attention when porting Oracle to MySQL, including the case sensitivity differences, the differences between reserved words and data types are described below. The database used by the customer is mysql, and the developed product supports oracle. To make the customer pay for it, we must port the databas

Index | performance ORA FAQ Performance Tuning Series-- The Oracle (tm) Users ' co-operative FAQ Why would a reverse index to useful when the leading column of the "index is" generated from a sequence? When the first column of the index is generated by the sequence, what is

When pdo is connected to oracle, an error is reported. it has been developed on its own pc and is now transferred to the server. After the program is copied to the server and runs, an error occurs when the pdo object is created, a

\simple-jndi\jdbc.properties. Like what: ############ ORACLE ################ Ora/type=javax.sql.datasource Ora/driver=oracle.jdbc.driver.oracledriver Ora/url=jdbc:oracle:thin:@127.0.0.1:1521:orcl Ora/user=system Ora/password=system ############ MSSQL ################ Mssql/type=javax.sql.datasource Mssql/driver=net.sourceforge.jtds.jdbc.driver Mssql/url=jdbc:jtds:sqlserver://127.0.0.1:1433;databasename=tes

); BEGIN V_date: = to_char (sysdate, 'yyyymmdd '); If substr (v_date, 7,2)> = 01 AND substr (v_date, 7,2) THEN ACCOUNT. PR_MERGE_QUERY_REPORT (to_char (SYSDATE, 'yyyymmd')-1, to_char (SYSDATE, 'yyyymmdd'), V_CODE, V_MSG, V_ERR ); ELSE ACCOUNT. PR_MERGE_QUERY_REPORT (to_char (SYSDATE, 'yyyymmd'), to_char (SYSDATE, 'yyyymmdd'), V_CODE, V_MSG, V_ERR ); End if; END; / Exit; ! B) crontab Use crontab-e to edit 30 22 ***/export/home/bss/pr_merge_query_report.sh>/export/home

What should I do if I forget my Oracle password? Sometimes we may forget the password of a user, but we need to do some operations with this user, and we cannot modify the password of this user. At this time, we can use some tips, to complete the operation. You can change the password as follows: 1. open cmd, enter sqlplus/nolog, press enter, enter "conn/as sysdba", and enter "alter user sys identified by n

Oracle cold, stay at home and read the "Mastering Oracle SQL" 2nd, found that Oracle's function is still very strong, there are 200 optical functions, hsql is difficult to match. The next stubborn, it seems either to risk using Hibernate3.0 SQL mapping function, or to run the JDBC assembly VO. 1. Report Totals dedicate

What if Oracle archive logs are full (ora-00257)? oracleora-00257 Oracle Database error ORA-00257: archiver error. Connect internal only, until freed, how to solve it? This problem is located when the archiving logs are full. We will share with you the specific solutions below. Solution: SQL> select * from V $ FLASH_RE

Label:The classic problem with Oracle database snapshot too old what caused it Oracle Classic Error Solver: ORA-1555 error (Snapshot too old)-... The book says it's because the rollback image need for read consistency have prbably been overwriteten by an active transaction. I am surprised if a transaction occupies some rollback segments until it commits, the rol

capsule container containing your application," Bottomley says. As a result, with a fully tuned container system, you can have up to four to six times times more server application instances on the same hardware than using Xen virtual machines or KVM VMs, according to Bottomley.Does that sound like a good idea? After all, you can let the server run much more applications. So why didn't anyone do it before? Actually, someone has done it before. The container