Linux上OcenBase单机版部署及基本信息查询

OceanBase单机版部署可以通过在线和离线两种方式部署。在线部署可以通过yum源或者apt源部署，直接拉取官方源码即可。实际使用中，大部分环境连不了外网，本文介绍离线方式安装。

　　下载“OceanBase All in One”离线安装包下载官方地址：

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1. 解压安装包

1. [root@tidb01 db_ob]# ll
   
2. -rwxr-xr-x 1 root root 692947447 May 1 19:23 oceanbase-all-in-one-4.3.0.1-100000242024032211.el7.x86_64.tar.gz
   
3. [root@tidb01 db_ob]# tar -xzvf oceanbase-all-in-one-4.3.0.1-100000242024032211.el7.x86_64.tar.gz
   
4. [root@tidb01 db_ob]# ll
   
5. total 676708
   
6. drwxr-xr-x 6 root root 88 Mar 29 11:46 oceanbase-all-in-one
   
7. -rwxr-xr-x 1 root root 692947447 May 1 19:23 oceanbase-all-in-one-4.3.0.1-100000242024032211.el7.x86_64.tar.gz

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2. 一键部署并添加到系统环境变量

1. [root@tidb01 db_ob]# cd oceanbase-all-in-one/bin/
   
2. [root@tidb01 bin]# ./install.sh
   
3. [root@tidb01 bin]# source ~/.oceanbase-all-in-one/bin/env.sh
   
4. [root@tidb01 bin]# obd demo

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3. 连接数据库

1. #通过2881端口直连数据库
   
2. [root@tidb01 ~]# obclient -h127.0.0.1 -P2881 -uroot@sys -Doceanbase -A
   
3. Welcome to the OceanBase. Commands end with ; or \g.
   
4. Your OceanBase connection id is 3221497482
   
5. Server version: OceanBase_CE 4.3.0.1 (r100000242024032211-0193a343bc60b4699ec47792c3fc4ce166a182f9) (Built Mar 22 2024 13:19:48)
   
6. 
   
7. Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
   
8. 
   
9. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
   
10. 
    
11. obclient [oceanbase]>
    
12. 
    
13. #通过ODP代理访问数据库
    
14. [root@tidb01 ~]# obclient -h127.0.0.1 -P2883 -uroot@sys -Doceanbase -A
    
15. Welcome to the OceanBase. Commands end with ; or \g.
    
16. Your OceanBase connection id is 1815347202
    
17. Server version: OceanBase_CE 4.3.0.1 (r100000242024032211-0193a343bc60b4699ec47792c3fc4ce166a182f9) (Built Mar 22 2024 13:19:48)
    
18. 
    
19. Copyright (c) 2000, 2018, OceanBase and/or its affiliates. All rights reserved.
    
20. 
    
21. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
    
22. 
    
23. obclient [oceanbase]>

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4. 查询数据库版本、字符集等基本信息

1. obclient [oceanbase]> SELECT VERSION();
   
2. +------------------------------+
   
3. | VERSION() |
   
4. +------------------------------+
   
5. | 5.7.25-OceanBase_CE-v4.3.0.1 |
   
6. +------------------------------+
   
7. 1 row in set (0.002 sec)
   
8. 
   
9. obclient [oceanbase]>
   
10. 
    
11. #查看字符集
    
12. obclient [oceanbase]> SHOW SESSION VARIABLES LIKE 'character\_set\_%';
    
13. +--------------------------+---------+
    
14. | Variable_name | Value |
    
15. +--------------------------+---------+
    
16. | character_set_client | utf8mb4 |
    
17. | character_set_connection | utf8mb4 |
    
18. | character_set_database | utf8mb4 |
    
19. | character_set_filesystem | binary |
    
20. | character_set_results | utf8mb4 |
    
21. | character_set_server | utf8mb4 |
    
22. | character_set_system | utf8mb4 |
    
23. +--------------------------+---------+
    
24. 7 rows in set (0.003 sec)
    
25. obclient [oceanbase]> SHOW SESSION VARIABLES LIKE 'collation\_%';
    
26. +----------------------+--------------------+
    
27. | Variable_name | Value |
    
28. +----------------------+--------------------+
    
29. | collation_connection | utf8mb4_general_ci |
    
30. | collation_database | utf8mb4_general_ci |
    
31. | collation_server | utf8mb4_general_ci |
    
32. +----------------------+--------------------+
    
33. 3 rows in set (0.003 sec)

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