Data Management:FAQ about database logon

How do I enter the valid database account and password?

The database account is the user account. The database password is the password of the user account. The following steps show how to log on to a database in the DMS console. In this example, an ApsaraDB RDS for MySQL instance is used.

1. Obtain the database account and password.

   1. Go to the Instances page in the ApsaraDB RDS console, find the instance to which you want to log on, and then click its name.

   2. In the left-side navigation pane, click Accounts to view the account name.

      Note

      If you forget the password, click Reset Password in the Actions column of the account. For more information, see Reset the password of an account on an ApsaraDB RDS for MySQL instance.

2. Log on to the database.

   1. In the upper part of the instance details page, click Log On to Database. You are navigated to the DMS console. The Log on to Database Instance dialog box appears.

   2. Enter the account name in the Database Account field.

   3. Enter the password in the Database Password field.

   4. Click Login.

What do I do if I fail to log on to the database in DMS and the message indicating that the database access is denied appears?

This error occurs for the following reasons:

• The database account or password is invalid.

  In this case, re-enter the database account and password and then click Login.

• The current account does not have the required permissions on databases.

  In this case, check whether your account has database permissions. If not, contact the administrator to grant database permissions to your account.

• The instance cannot be accessed from the current IP address.

  In this case, you must allow the current IP address to be used to access the instance or add the IP addresses and CIDR blocks of DMS to the IP address whitelist of the database instance. For more information, see Authorize an account to access its authorized databases from specified IP addresses or Add DMS IP addresses and CIDR blocks to security settings.

What do I do if the SSL certificate expires?

If the SSL certificate expires, update the expiration time. For more information, see Use a cloud certificate to enable SSL encryption.

What do I do if I am prompted a whitelist issue when I register an ApsaraDB instance in DMS?

You can click Configure Whitelist in the Whitelist issues dialog box. DMS automatically adds the IP address of the DMS server to the whitelist of the ApsaraDB instance. If the IP address fails to be automatically added to the whitelist, you need to manually add it to the whitelist. For more information, see Add DMS IP addresses and CIDR blocks to security settings.

What do I do if I fail to log on to an ApsaraDB for Redis instance in DMS and the system prompts that SSL connection must be used to connect the database instance after I enable TLS or SSL encryption for the instance?

You must enable SSL for the instance in DMS. To enable SSL for the instance in DMS, perform the following steps:

What do I do if I fail to log on to a database in DMS and the message indicating that the access source is invalid appears?

If you use a Resource Access Management (RAM) user, perform the following steps to troubleshoot the issue:

1. Check whether you have authorized DMS to access your resources as the RAM user. If you have not authorized DMS to access your resources as the RAM user, complete the authorization on the Cloud Resource Access Authorization page.

2. Add the IP addresses of DMS to the IP address whitelist of the database instance. For more information, see Add DMS IP addresses and CIDR blocks to security settings.

3. Refresh the page and log on again.

What do I do if the following error message occurs when I log on to an ApsaraDB RDS instance?

NULL: 
com.ali.idbcloud.commons.multi.instance.session
service.AbstractAliyunWhiteListUserSessionServi
ce.throwConnectDBFailReason(AbstractAliyunWhite
ListUserSessionService.java:97)com.ali.idbcloud
.commons.multi.instance.sessionservice.BaseUser
SessionService.doLoginCore(BaseUserSessionServi
ce.java:924)com.ali.idbcloud.commons.multi.inst
ance.sessionservice.BaseUserSessionService.worl
dLogin(BaseUserSessionService.java:968)

In most cases, this error occurs in the old version of DMS Personal Edition. The old version of DMS Personal Edition is discontinued. To go to the DMS console of the new version, click Go to New DMS in the upper-right corner of the page.

What do I do if I fail to log on to an ApsaraDB RDS for MySQL instance and the system prompts that the instance does not exist?

Log on to the ApsaraDB RDS console. On the Instances page, check whether the instance to which you want to log on is in the normal state. If the instance status is normal, refresh the DMS console to synchronize the metadata of the instance. If the instance status is abnormal, troubleshoot the issue.

What do I do if the system prompts that I temporarily cannot access the instance by using DMS?

This error occurs because the instance owner or DMS administrator does not grant permissions on instance logon to your account. In this case, contact the DMS administrator to grant permissions on instance logon to your account. For more information, see the Manage permissions as a DMS administrator section of the "Manage permissions" topic.

What do I do if the "Communications link failure" message appears and the time consumed for connection is displayed when DMS connects to a MySQL database?

• If the time consumed for connection is 0 milliseconds, the "Communications link failure" error may occur for the following reasons: the database account or password is invalid, no whitelist is configured, and the whitelist is incorrectly configured. For more information about how to configure an IP address whitelist, see Add DMS IP addresses and CIDR blocks to security settings.

• If the time consumed for connection is a few milliseconds or tens of milliseconds, check whether SSL is enabled for the instance and whether the SSL certificate expires.