Database Administrator

How Does Oracle limit the process of illegal package calling? How Does Oracle limit the process of illegal package calling? Assume that I have a package P_A, which encapsulates the important process DO_A.Another package P_ B needs to call P_A.DO_A

Install MySQL 5.6.24 in CentOS 6.6 Install MySQL 5.6.24 in CentOS 6.6 1. First view the MySQL installed on the local machine Rpm-qa | grep-I mysql If any information exists, MySQL has been installed. You need to completely uninstall the previous

Oracle Developer code The following are quotations from Oracle: Oracle Database developers shocould follow is to do everything they can in SQL. what they cannot do in SQL, they shoshould do in PL/SQL. and what they cannot do in PL/SQL, they

Oracle uses a string-indexed two-dimensional array Oracle uses a string-indexed two-dimensional array -SAMPLE DATAStore name product salesA apple 3000A banana 2000B APPLE 5000Bmelon 100 -CONSTRUCT PACKAGECreate or replace package p_nested_array

Oracle dump function DUMPSyntax DUMP (expr [, return_fmt[, Start_position [, length]]) Purpose DUMP returns a VARCHAR2 value containing the datatype code, length in bytes, and internal representation of expr. The returned result is always in the

Warning during Oracle Compilation Compiler Warnings Compiler warning Oracle 10g allows you to enable compile-time warnings that are useful to identify potential run-time problems in your programs. these warnings are not serious enough to raise an

Data Dictionary related to PL/SQL Sometimes, we encounter the following problems during PL/SQL development:1) What database objects does my program depend on?2) which package calls a subroutine or variable in another package?3) which of the

Data row-to-column instance and data column instance During system development, data statistics are often performed and data rows are converted into columns, for example, the table representation. However, the data presented in the database is often

Generic + polymorphism, Polymorphism Q: Generic T is usually a placeholder for a class. But what mechanism does this "T" use to get the correct results? A: generics blossom on polymorphism. To give a simple example, the average height of men and

How to ignore the title of the first row of an oracle External table? Article from the csdn blog Oracle bug, if reproduced please indicate the source: http://blog.csdn.net/yfleng2002/article/details/47104723 Introduction When an oracle External

Obtain the random time of the specified date (oracle function), oracle Function Address-http://blog.csdn.net/qq525099302/article/details/47146067 /* The relative minimum value of the date string v_begin random date in the format of v_date

Configure master-slave replication for redis, and configure master-slave for redisConfigure master-slave replication for redis master-slave Replication ./Redis-server command. If no parameter is appended, it starts the redis service according to the

Oracle11g exp export problem: some tables cannot be exported, oracle11gexp An issue found during command exp export from oracle is that some tables cannot be completely exported. After checking, it is found that any blank table cannot be exported.

ORACLE-015: ora-25153 temporary tablespace is empty, ora01652 cannot pass through 128, oracle-015ora01652 I wrote a complex select statement, and suddenly oracle reported: ora-25153 temporary tablespace is empty, this error, so I checked online,

Common PostgreSQL Functions| String concatenationSyntaxString | stringExample'Post' | 'gresql' -- PostgreSQL is returned.Length () String lengthSyntaxLength (string)ExampleLength ('doo') -- returns 4LIKE pattern matchingSyntaxString LIKE

WAS _ cluster deployment application encountered ADMA0085E and adma00000w errors, adma0085eadma00000w Original works, from "Deep Blue blog" blog, deep blue blog: http://blog.csdn.net/huangyanlong/article/details/47143431 Recently, a was package

How Does oracle execute stored procedures? The stored procedure is as follows: Create procedure gokul_proc (pId in number, pName in varchar2, OutCur OUT G_PKG_REFCUR.rcDataCursor) isBEGIN Open OutCur For select * from gokul_table ob where ob.

Java playframework and playframework Shortly after learning java, let's try the architecture and choose a simple architecture. The running environment here is JDK1.7. I tried jdk1.8 but it won't work. The problem is that play-1.2.7 is used for

Consistent hash and hash Consistent hash is a special hash algorithm. After the consistent hash algorithm is used, the number of slots (size) in the hash table only needs to be re-mapped to K/n keywords on average, where K is the number of keywords,

Differences between Mycat and MySQL -- the core function of Mycat, mycatmysql A friend was asked during the interview: What is the difference between Mycat and MySQL. We can regard the upper layer as an abstraction of the lower layer. For example,