Creation of names of users and storage space began with the numbers or _ $#.

Hi all

Could you please explain to me

If the creation of users and storage names began with numbers or _ $# is fine. Are there any constraints or slandered oracle. ?


Thanks in advance.
Dev

After watching a few google links, I want to sum-up rule for the design of Tablespace:

1. always create tablespace locally managed (management of the measure).

2. never create tablespace with hundreds of small data files to avoid a slower recovery.

3. the types of segments that are used in the same way must be stored together.

4. the system must be designed for the most common usage.

5. the regions should be exceptions.

6 feud among storage space should be kept to a minimum.

7. the data dictionary must be isolated.

8. always give a name to the tablespace; so it may be easy to know what contains this tablespace.

9 http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Recommendations_to_minimize_disk_I/O_contention&anchor=iooracle

10. never use quotation marks double tablespace name.

11 create the tablespaces explicitly using CREATE TABLESPACE rather than implicitly by creating a table without specifying a tablespace name.

12. create an a tablespace less as temporary for user types.

13 specify the suffix ".dbf" for names of applications datafile, '.log' for log data file names.

14. set the default storage parameters to take into account the size of the typical object.

15 specify PCTINCREASE 0. Exceptions can only be made with the approval of the Central s/n.

16 AUTOEXTEND must be enabled.

17 MAXSIZE must be set.

After posting the links to doc, I want to sum-up rule for the creation of the user:

1. always follow "Requirements Minimum for passwords"
http://docs.Oracle.com/CD/B28359_01/network.111/B28531/authentication.htm#CHDFDHAJ

2. never use double quotes with username and passwords.

3 assign a default Tablespace for the user.

4 assign a Tablespace Quota for the user.

5 avoid giving the ability for users to create objects in a table space, because the schema is the logical database for the user.

6 enable auditing for many reasons.

7 assign a temporary Tablespace for the user.

8 identify the appropriate profile and role to the user.

9. only letters, numbers and the underscore character are allowed in names. Although Oracle allows for $ and the #, they are not needed and may cause unexpected problems.

10. all names are uppercase. Or at least unimportant in which case. Ignoring this rule usually leads to making reference to the tables and the columns very clumsy because all names must be in double quotes.

11. the first character of the name must be a letter.

12. keep meaningful names, but at the same time, do not use long_names_describing_every_single_detail_of_particular_object.

Sources: https://www.cms.gov/DBAdmin/downloads/OracleStandardsandGuidelines.pdf
http://www.gplivna.EU/papers/naming_conventions.htm
http://www.Oracle-base.com/articles/Misc/NamingConventions.php
http://SS64.com/ora/syntax-naming.html

Concerning
Girish Sharma

Published by: Girish Sharma on March 2, 2012 15:09

Published by: Girish Sharma on March 2, 2012 15:12

Tags: Database

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