Can we change username in Oracle?
Answer: There is no supported method for renaming a user in Oracle. In an Oracle schema, user user ID is the anchor, and although that there is a dictionary “hack” that claims to successfully re-name an Oracle user, it is better to export/import data pump to rename an Oracle user ID.
What is the default username for Oracle Database?
SYS
Log in to the database using the user name SYS and connect as SYSDBA. Use the password that you specified for the SYS account during the installation.
What symbols are not allowed in passwords?
Diacritics, such as the umlaut, and DBCS characters are not allowed. Other restrictions: The password cannot contain spaces; for example, pass word . Passwords cannot be longer than 128 characters.
Which special characters are allowed in passwords?
Passwords should contain three of the four character types:
- Uppercase letters: A-Z.
- Lowercase letters: a-z.
- Numbers: 0-9.
- Symbols: ~`! @#$%^&*()_-+={[}]|\:;”‘<,>.?/
Who can change a password for any user of the database?
A database superuser can use this command to change the password associated with any role.
Why are accounts locked?
The common causes for account lockouts are: End-user mistake (typing a wrong username or password) Programs with cached credentials or active threads that retain old credentials. Service accounts passwords cached by the service control manager.
What is Oracle user name?
Oracle Default Username and Password
| User Name | Default Password | Script (in $ORACLE_HOME) |
|---|---|---|
| BI | CHANGE_ON_INSTALL / BI | /demo/schema/bus_intelligence/bi_main.sql |
| CTXSYS | CHANGE_ON_INSTALL / CTXSYS | /ctx/admin/ctxsys.sql |
| DBSNMP | DBSNMP | /rdbms/admin/catsnmp.sql |
| DIP | DIP | /rdbms/admin/catdip.sql |
How many characters should a user name have in Oracle?
Oracle recommends that the user name contain at least one single-byte character regardless of whether the database character set also contains multibyte characters. Oracle recommends that user names and passwords be encoded in ASCII or EBCDIC characters only, depending on your platform.
How to manage the security for Oracle Database users?
You can manage the security for Oracle Database users in many ways, such as enforcing restrictions on the way that passwords are created. You can secure users accounts through strong passwords and by specifying special limits for the users. Each Oracle database has a list of valid database users.
Can a common user create a user account in Oracle Database vault?
However, if one of the PDBs is Oracle Database Vault-enabled, then the Database Vault restrictions, such as SYSTEM not being allowed to create user accounts, apply to the common SYSTEM user when he is connected to that PDB. (Oracle does not recommend that you change the privileges of the Oracle-supplied common users.
What are the restrictions when creating a user account?
When you specify a name for a user account, you must be aware of restrictions such as whether the name is unique and naming conventions. Each user has an associated schema; within a schema, each schema object must have a unique name. Oracle Database will prevent you from creating a user name if it is already exists.