DBMS in Oracle_ output. put_ Line output problem solving process

Catalog

Preface

1. Turn on oracle Output

2. use sqlplus land oracle

3. pl/sql Execute output statement

summary

Preface

Recently I wrote oracle The process , There is one ORACLE in dbms_output.put_line Problems that cannot be output . It took nearly an hour . The following describes the process of solving the problem （ Check data and solve ）：

1. Turn on oracle Output

Checked the data , be supposed to oracle The default is off . To execute :

set serveroutput on;

Can only be , So in pl/sql develope Execute the statement in , Report errors , reason ： pl/sql I won't support it .

solve ： stay windows cmd In the implementation of sqlplus command .

2. use sqlplus land oracle

1、 Start in cmd Internal execution ： sqlplus /nolog

Report errors ： The main idea is No such order

General cause ： No installation oracle client , Or there is something wrong with the environment variables .

solve ： My is reinstalled oralce client , Then you need to check whether there is this variable in the environment variable , If not, add it manually , Generally, it is necessary to reinstall .

2、 perform sqlplus/nolog

Then input oracle Link information . Here is a link to a remote database

Format ：sqlplus user/[email protected]_ip:port/ Instance name

Example ：sqlplus xxgx/[email protected]:1521/orcl

The reason for logging in remotely , There will be a slight pause , After connecting . It can be executed show user; Show current user .

Correct display indicates successful login .

additional ： View all tables under the current user ：

select TABLE_NAME from USER_TABLES;

thus sqlplus Successful landing .

3. pl/sql Execute output statement

perform ：

--pl/sql programing language --pl/sql Programming languages are right for sql Language extension , bring sql The language has the characteristics of procedural programming .--pl/sql Programming languages are better than general procedural programming languages , More flexible and efficient .--pl/sql Programming language is mainly used to write stored procedures and stored functions .-- The way of life -- The assignment operation can use =： You can also use into Query statement assignment .declare i number(2) := 10 ; s varchar2(10) := ' Ha dd Ha ' ; ena XXGX_TJ_RBBTJ.SYS_TIME%type ; -- Referential variables begin dbms_output.put_line(i); dbms_output.put_line(s); select SYS_TIME into ena from XXGX_TJ_RBBTJ where ID = 1000060; dbms_output.put_line(ena);end;

Show ：

Here's what I want to say This output , I haven't found where to output for a long time , It's just SQL There is a Output The window of . Click to see . At that time, I was still confused Ah .

summary

This is about ORACLE in dbms_output.put_line This is the end of the article on output problem solving , More about ORACLE dbms_output.put_line Please search the previous articles of SDN or continue to browse the related articles below. I hope you will support SDN more in the future ！