This is an original planning guide. It is not a vendor manual, an official standard, or legal advice. Example addresses use documentation ranges. Review every command before you paste it.
What this hour is for
Each lookup answers one code you type: a MySQL number, a SQLSTATE, a SQL Server number, an ORA- number, or a MongoDB code. The page is a label for that one code. It is not a list to memorize and not permission to change the database.
Do not treat the text as a change. One code is the window.
192.0.2.10, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. A sample password is replaced. It is not a password you keep.
The change you can finish
Apply nothing while you are writing the note. When the lab window opens, it is one change on the database named in the ticket. Read the draft, then the database, then decide.
Rollback is the backup, the file, or the snapshot you saved first. You do not invent a rollback after the only copy is gone.
- Type one code you already have.
- Read the label.
- Do not change the database.
- Stop.
Mistakes that outlive the statement
Database Error Codes Reference goes wrong in a small set of ways. The list is here so the ticket can forbid them before the window.
- A dump of every code stored as the work.
- The label treated as a change already made.
- A code from a database you do not administer pasted with a secret.
Decisions to write down
One decision for Database Error Codes Reference: One code is written. The label was read. Nothing was changed. And no secret is in the note.
Checks before you call it done
Confirm this before you call the change done: One code is written. The engine is written. The label was read. Nothing was changed. And the database is yours. If one of those fails, stop.
Before you leave the database
Database Error Codes Reference ends when the database in the prompt is the database in the ticket. If it is not, you are on the wrong database. Stop.
The draft stays a draft until a person has read the names in it. A generator does not log into the database. You delete a line that names a host, a database, or an account you did not write down.
192.0.2.10, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. example.com is a documentation name. They belong in the note. They are not values you leave on a database because a draft included them.
prompt-for-this is a reminder that a secret is missing. It is not a password, a key, or a token you save in the ticket or in git. A sample password in a draft is replaced. It is not a password you keep.
One change is the window. If two things move and the result is wrong, you will not know which one did it.
If the same step fails twice, stop for the day. Restore the copy you took first.
A second person reads the database name and the change aloud. If they cannot find them in the ticket, the note is not done.
This page is a planning guide. It is not a vendor manual, not an official standard, and not permission to touch a database you do not administer. You do not disable authentication, a firewall, or TLS to make a check pass.
Tools for this guide
These tools run in the browser on this site. They do not log into your machines.
- MySQL Error Code Lookup
- PostgreSQL SQLSTATE Lookup
- SQL Server Error Number Lookup
- Oracle ORA- Error Lookup
- MongoDB Error Code Lookup
Related pillar guides
More in this cluster
The pillar for this page, and the next published pages filed with it.