centos7 oracle19c installation || new user || ORA-01012: not logged on

There are three steps

1. Download the installation package: there is a detailed installation tutorial in it

Link: https://pan.baidu.com/s/1Of2a72pNLZ-DDIWKrTQfLw?pwd=8NAx 
Extraction code: 8NAx 

2. After installation, perform initialization: it takes a long time

/etc/init.d/oracledb_ORCLCDB-19c configure

3. Configure environment variables, if you do not configure environment variables, the sqlplus command will not take effect.

Note: After the installation is complete, an oracle user will be created automatically, which can be seen in the /etc/passwd file

Configure environment variables

//This step needs to be switched to the oracle user

su oracle

# Execute the command
vim .bash_profile in the oracle home directory

# Add environment variables after the file, as shown in the figure below
export ORACLE_BASE=/opt/oracle
export ORACLE_HOME=/opt/oracle/product/19c/dbhome_1
export ORACLE_SID=ORCLCDB
export ORACLE_PDB_SID=ORCLPDB1
export PATH=$ORACLE_HOME/bin:$PATH :$HOME/.local/bin:$HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib
export NLS_LANG=american_america.ZHS16GBK

After configuring the environment variables, try the sqlplus connection

My oracle service is stopped and I need to restart the oracle service

//Query the current service name For example: url:jdbc:oracle:thin:@server ip:1521:service name

select global_name from global_name; //This check is the service name

----------------------------------------------- Log in again and report an error!!! !As follows ORA-01012: not logged on -------------------------------------------- -----------------------

 reboot

Specific solutions:     http://t.csdn.cn/Xqndl

-------------------------------------------------- --Finish----------------------------------------------- --------------------------------

Modify user password, use external connection

Use navicat to connect

Create a new database, I added a new user qianyi

 Solve the problem: the way I use is to change the container to pdb

When this problem occurs, it may be because the container for creating the role is cdb.
If you want to continue creating, you can add "c##" before the role name, that is, c##role name

Or change the container to pdb
before you must log in with sysdba, otherwise you have no permission to modify

1. SQL>sqlplus system/[email protected]:152x/orcl as sysdba
xxxx is your own login password
192.168.x.xx is the host number of the computer (you can check it by typing ipconfig /all in the cmd command line)
152x is The port number you connect to the database yourself
2. Query whether the container is CDB
select name, cdb, open_mode, con_id from v$database;
3. View the current container
show con_name;
4. View the created pdb
show pdbs;
5. Open the corresponding container I Here is orclpdb1
 alter pluggable database orclpdb1 open;
6. Switch the current container to the specified PDB container
alter session set container = ORCLPDB;
7.
Create user qianyi create user qianyi identified by qianyi default tablespace USERS temporary tablespace TEMPfor both username and passwordprofile DEFAULT;

//Assign a separate permission 

grant sysdba to qianyi ; //Give dba permission directly

SQL> grant dba,connect,resource,create view to qianyi;

Grant succeeded.

SQL> grant select any table to qianyi;

Grant succeeded.

SQL> grant update any table to qianyi;

Grant succeeded.

SQL> grant insert any table to qianyi;

Grant succeeded.

SQL>  grant delete any table to qianyi;

Grant succeeded.

SQL> grant create session to qianyi;

Grant succeeded.

Log in again with the qianyi user, and report an error again...

 sqlplus login also reports an error, there will be garbled characters

Changing the password doesn't work either,

ALTER USER qianyi IDENTIFIED BY 123456;

--------------------------------The correct solution is as follows:--------------- -------------------------------------------------- ------------------

Modify the /opt/oracle/product/19c/dbhome_1/network/admin/tnsnames.ora file

vim /opt/oracle/product/19c/dbhome_1/network/admin/tnsnames.ora

Restart listening.
lsnrctl stop
lsnrctl start

After restarting the monitor, log in again

Try it with sqlplus first

sqlplus 用户名/密码@PDB (The name of the new PDB in tnsnames.ora (that is ORCLPDB1))

For example, log in like this on my side: sqlplus qianyi/qianyi@ORCLPDB1

Note: ORCLPDB1 is not case sensitive 

Log in with navicat