Oracle

dbms_utility. Format_error_backtrace : Returns the description of the current exception, which allows you to know where the exception was originally generated.The system sets a stack for the last generated exception and tracks its delivery, which

--Query The department number of the highest average salary departmentSelect Deptno,avg_sal from(select Deptno,avg (SAL) avg_sal from EMP Group by Deptno)-as a table, no table can bewhere avg_sal =(select Max (avg_sal) from (select Deptno,avg (SAL)

Environment: CentOS7 x86_64PHP 7.1.2 (Installation path:/usr/local/php7.1.2)Oracle 11G R21. Download the Oracle client:

The connection URL of the database is configured as jdbc:oracle:thin:@ (description= (address_list= (address= (protocol=tcp) (HOST=VIP1)) (port=1521) ( Address= (PROTOCOL=TCP) (HOST=VIP2) (port=1521)) (Load_balance=yes) (Failover=on)) (Connect_data=

The previous article briefly describes the Oracle parameters database stored procedure of type object, and how Java uses JDBC to invoke stored procedures of that class.But what I need is a solution under C + +. Using POCO libraries did not find any

Typical bug Analysis of Oracle character garbled and data cross-border interviewPreface: As party B, we found two strange bugs in the acceptance stage of party A's customers.The following is the source of the problem, the root cause of the problem,

Oracle Conncect role vs Create SessionThe CONNECT role is introduced with Oracledatabase version 7, which added new and robust support for database roles. Theconnect role is used in sample code, applications, documentation, and Technicalpapers. The

C # Calling stored proceduresI have been involved in a lot of articles, such as the following text, is to share itPurpose: To change the points and make certain verificationFirst, the General debugging method:Method one: With the return out

AIX under RAC Construction seriesAIX under RAC build oracle10g (v) Install Oracle, set up monitoringEnvironment Node Node 1 Node 2 Small machine Model IBM p-series 630 IBM p-series 630

--1. The Lpad function populates the left string with some specific characters whose syntax is formatted as follows:Lpad (String,n,[pad_string])--string: But the character or argument--N: The length of the character, is the number of strings

This SQL can be used to query a table for a specific location in the record--Query method gets pagination of the statement select *from --Using paging to write stored procedures--1 first to create a package that defines the cursor typeCreate or

In previous versions, move table could not be online, and move would lead to rowid changes to invalidate the corresponding index. ALTER TABLE move online in 12c will not block new transactions and will automatically maintain the validity of the

first you need to know that in a Linux system, the file type is not related to the suffix name, the suffix is only for the convenience of identification, So the compressed package you download may be in tar.gz format, or it may be tar.bz2 or TAR.XZ

Facilitates regular expression matching out URLs--1 Table PreparationCREATE TABLE Test_regexp(Object Varchar2 (50));--2 Data PreparationInsert into Test_regexp (OBJECT)VALUES (' http://www.baidu.com ');Insert into Test_regexp (OBJECT)VALUES (' http:/

One, maximum performance conversion to maximum availableConfirm the main Library mode:[Email protected] hey~2->select protection_mode,protection_level from V$database;Protection_mode Protection_level-------------------- --------------------MAXIMUM

Oracle SID Blasting Tool sidguess in Oracle, the SID is the abbreviation for system identifier. A SID is a unique identifier for a database. When a user wants to connect to an Oracle database remotely, they need to know the SID, user name, password,

Oracle 12c Installation Checklist off iptables NetworkManager selinuxservice iptables stopchkconfig iptables offservice NetworkManager stopchkconfig NetworkManager off change/etc/selinux/config file change selinux=enforcing to selinux= Disabled

--Build a table statementCREATE TABLE SCOTT. DEPT(Deptno Number (2) is not NULL,Dname VARCHAR2 (15),Loc VARCHAR2 (13))Tablespace USERS;Comment on table deptIs ' Department table ';Comment on column DeptnoIs ' department number ';Comment on column

Buffer busy waits (Hot block contention)Website Explanation:This wait indicates that there is some buffers in the buffer cache that multiple processes is attempting to access C oncurrently. Query V$waitstat for the wait statistics for each class of

Lab environment: Oracle Database 11g Enterprise Edition Release 11.2.0.4.0-64bit Production1. Create TABLE to insert dataSql> CREATE TABLE txtx (ID int,name char (2), TX char (3), Id1 int,primary key (ID,NAME,TX)); sql> INSERT INTO TXTX values (1, '