Overview
After you log on to the homepage of OceanBase Developer Center (ODC), you can click Create Connection in the upper-right corner of the Private Connection tab to create a private connection.
After you create the connection, you can view the saved database connection in the connection list on the ODC homepage.
Notice
In ODC V2.3.0 and later, the root@sys user permissions are required to query views when you use the import and export features. Therefore, to use the import and export features, you need to set the root@sys user in the Advanced Configuration section during connection creation. In ODC since V2.4.1, the dependency of the import and export feature on the root@sys user is removed when you query views. However, the root@sys user permissions are still required to view the partition information. Therefore, you must set the root@sys user in the Advanced Configuration section during connection creation. The Oracle connection mode is designed to share sessions. In this mode, when you actively commit or roll back a transaction, or trigger a transaction commit or rollback by creating, modifying, or deleting a database object or by executing a DDL statement, the transaction commit or rollback takes effect in all windows. When you enter a connection in Oracle mode for the first time, a reminder is displayed. In manual-commit mode, make sure to set the `ob_trx_idle_timeout` parameter to a value greater than or equal to the timeout value of SQL queries. Otherwise, if two SQL statements in one transaction are executed at an interval longer than the value of the `ob_trx_idle_timeout` parameter, the connection is terminated. However, if the `ob_trx_idle_timeout` parameter is set to an excessively large value, the session cannot be released in time, resulting in unnecessary memory consumption. Therefore, you must set this parameter to a proper value.
Procedure
Perform the following steps to create a connection:
Log on to ODC and click Create Connection in the upper-right corner of the Private Connection tab.
In the Create Connection panel, specify the fields described in the following table. If you have an OceanBase connection string, which follows the mysql -h host name -P port number -u database username@tenant name # cluster name -D default database -p ' database password ' format, you can obtain the information from the string. You can also paste the string in the field of Intelligent Parsing on the panel to automatically populate the corresponding fields.
Field Description Database Type Select Physical Database or Logical Database . * Physical Database: regular databases. * Logical Database: ODP (Sharding). Region Select Independent Deployment/Apsara Stack if your database instance is deployed in your own environment, or select Public Cloud if your database instance is deployed on Alibaba Cloud. Intelligent Parsing You can paste a connection string to the field. ODC automatically identifies the string and fills in the corresponding fields on the page. Connection Mode Select MySQL or Oracle . Logical databases support only the MySQL mode. Endpoint * Host IP : the IP address of the server where the target database is located. * Port : the port number of the server where the target database is located. * Cluster name : the name of the cluster where the target database is located. This parameter is not required for logical databases. * Rent name : the name of the tenant in which the target database is located. This parameter is not required for logical databases. Note You can obtain the host name and port number from the details page of the tenant in which the target database is located, such as a tenant created on Alibaba Cloud or in OceanBase Cloud Platform (OCP). Database Account * Database Username: an account under the tenant. In MySQL mode, this account must have access to the default database. * Database Password: the password of the account under the tenant. You can click Test Connection next to the password field to check the connection to the target database. * Save Database Password * If you disable this option, the database password for the connection is not saved. Each time you use or test the connection, you must enter the database password in the password dialog box. * If you enable this option, the database password for the connection is saved. You do not need to enter the database password each time you use the connection. Note * An error will be returned if the configurations such as the username, password, and network settings are invalid. * You can only connect to a database in the current tenant. Otherwise, a test failure error will be returned. Default Database/schema When you connect to a database in a MySQL tenant, you must specify the default database for the connection. You do not need to specify this field when you connect to a database in an Oracle tenant. Note If you leave this parameter unspecified, the information_schema database is connected by default. However, if the connection to the information_schema database fails, you need to specify a database that the current user has access permissions. SQL Query Timeout Value You can specify a timeout value for SQL queries. A query whose execution time exceeds the timeout value is automatically terminated. The default timeout value is 60 seconds. Query sys Tenant View When Database Type is set to Physical Database, you can specify an account that has the privilege to query the SYS tenant view, and the password. This field is automatically populated when SYS is specified as the tenant in Endpoint . * Account : an account having the privilege to check the views under the SYS tenant. * Password : the password of the account. After you specify the account and password, click Test Connection next to the password field to verify whether the account information is valid. Note * In ODC V2.3.0 and later versions, to use the import and export features, you need to configure the root@sys account in the Advanced Configuration section during connection creation. * In ODC V2.4.1 and later versions, the dependency of the import and export features on the root@sys user is removed when you query views. If the root@sys account is not configured, some ODC objects such as stored procedures and functions do not support the export feature. If the root@sys account is configured, you can access the views under the SYS tenant to obtain the optimal data routing strategy, which can increase the export speed. Click Save to save the current configuration in the ODC connection list. Next time you log on to ODC, you can directly select the connection from the list. The connection configuration does not necessarily need to pass the connection test when you save the configuration.
Click Copy Connection String in the lower part of the panel to copy the connection information being edited on the current panel as a connection string if necessary. This allows you to obtain the connection information with ease.
Click Cancel if you do not need to save the current connection configuration. Then, a confirmation dialog box appears.