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OceanBase Connector/C

V2.0.0

Overview
Installation guide
User Guide
- Basic data structures
- Basic operations
  - Basic API operations
  - API operations on prepared statements
C API functions
- Overview
- my_init()
- mysql_affected_rows()
- mysql_autocommit()
- mysql_change_user()
- mysql_character_set_name()
- mysql_client_find_plugin()
- mysql_client_register_plugin()
- mysql_close()
- mysql_commit()
- mysql_connect()
- mysql_create_db()
- mysql_data_seek()
- mysql_debug()
- mysql_drop_db()
- mysql_dump_debug_info()
- mysql_eof()
- mysql_errno()
- mysql_error()
- mysql_escape_string()
- mysql_fetch_field()
- mysql_fetch_field_direct()
- mysql_fetch_fields()
- mysql_fetch_lengths()
- mysql_fetch_row()
- mysql_field_count()
- mysql_field_seek()
- mysql_field_tell()
- mysql_free_result()
- mysql_get_character_set_info()
- mysql_get_client_info()
- mysql_get_client_version()
- mysql_get_host_info()
- mysql_get_proto_info()
- mysql_get_server_info()
- mysql_get_server_version()
- mysql_get_ssl_cipher()
- mysql_hex_string()
- mysql_info()
- mysql_init()
- mysql_insert_id()
- mysql_kill()
- mysql_library_end()
- mysql_library_init()
- mysql_list_dbs()
- mysql_list_fields()
- mysql_list_processes()
- mysql_list_tables()
- mysql_load_plugin()
- mysql_load_plugin_v()
- mysql_more_results()
- mysql_next_result()
- mysql_num_fields()
- mysql_num_rows()
- mysql_options()
- mysql_options4()
- mysql_ping()
- mysql_plugin_options()
- mysql_query()
- mysql_real_connect()
- mysql_real_escape_string()
- mysql_real_query()
- mysql_refresh()
- mysql_reload()
- mysql_rollback()
- mysql_row_seek()
- mysql_row_tell()
- mysql_select_db()
- mysql_server_end()
- mysql_server_init()
- mysql_set_character_set()
- mysql_set_local_infile_default()
- mysql_set_local_infile_handler()
- mysql_set_server_option()
- mysql_shutdown()
- mysql_sqlstate()
- mysql_ssl_set()
- mysql_stat()
- mysql_stmt_affected_rows()
- mysql_stmt_attr_get()
- mysql_stmt_attr_set()
- mysql_stmt_bind_param()
- mysql_stmt_bind_result()
- mysql_stmt_close()
- mysql_stmt_data_seek()
- mysql_stmt_errno()
- mysql_stmt_error()
- mysql_stmt_execute()
- mysql_stmt_fetch()
- mysql_stmt_fetch_column()
- mysql_stmt_field_count()
- mysql_stmt_free_result()
- mysql_stmt_init()
- mysql_stmt_insert_id()
- mysql_stmt_next_result()
- mysql_stmt_num_rows()
- mysql_stmt_param_count()
- mysql_stmt_param_metadata()
- mysql_stmt_prepare()
- mysql_stmt_reset()
- mysql_stmt_result_metadata()
- mysql_stmt_row_seek()
- mysql_stmt_row_tell()
- mysql_stmt_send_long_data()
- mysql_stmt_sqlstate()
- mysql_stmt_store_result()
- mysql_store_result()
- mysql_thread_end()
- mysql_thread_id()
- mysql_thread_init()
- mysql_thread_safe()
- mysql_use_result()
- mysql_warning_count()

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Installation guide

Last Updated：2026-04-10 03:06:40 Updated

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This topic describes how to install OceanBase Connector/C. Before the installation, make sure that the prerequisites are met.

Prerequisites

Before you install OceanBase Connector/C, make sure that you have set up the basic database development environment that meets the following requirements:
- The GNU Compiler Collection (GCC) version is 3.4.6 or later. Version 4.8.5 is recommended.
- The CMake version is 2.8.12 or later.
Contact OceanBase Technical Support to obtain the installation package of OceanBase Connector/C, also known as LibOBClient.

Installation on Linux

Install LibOBClient.

sudo rpm -ivh libobclient-xx.x86_64.rpm

Install OBClient.
```
sudo rpm -ivh obclient-xx.x86_64.rpm
```
Note

OBClient depends on LibOBClient. Therefore, install LibOBClient first.

Compilation from the source code

The GitHub repository of OceanBase Connector/C provides the latest development version of the source code.

Install dependent tools.

sudo yum install -y git cmake gcc make openssl-devel ncurses-devel rpm-build  gcc-c++ bison bison-devel zlib-devel gnutls-devel libxml2-devel openssl-devel \
libevent-devel libaio-devel

Download the source code of OBClient.
```
cd rpm
```

Execute the compilation script and download the code of LibOBClient.

sh build.sh   # Compilation code 
cd libmariadb/rpm   # Go to the package directory of LibOBClient.

Build the RPM installation packages of LibOBClient and OBClient.

sh libobclient-build.sh    # Build the installation package of LibOBClient.
cd ../../rpm      # Go to the package directory of OBClient.
sh obclient-build.sh    # Build the installation package of OBClient.

Install LibOBClient.

sudo rpm -ivh libobclient-xx.x86_64.rpm

Install OBClient.
```
sudo rpm -ivh obclient-xx.x86_64.rpm
```
Note

OBClient depends on LibOBClient. Therefore, install LibOBClient first.

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Basic data structures