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
The visualizer lists the lines you paste and keeps a child under its parent when the paste uses indent or an arrow. Costs are planner units, not milliseconds. The Oracle analyzer reads a plan fragment you paste and does not connect to Oracle.
Do not run the query during the reading to refresh the plan. A plan from a different database, or from a different statistics day, is labeled as such.
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.
- Paste a plan you already hold.
- Read parent and child.
- Label the database and the time.
- Do not run the query.
- Stop.
Mistakes that outlive the statement
Reading Execution Plans goes wrong in a small set of ways. The list is here so the ticket can forbid them before the window.
- The query run during the reading.
- A plan from another database treated as today.
- A secret left in the statement text.
Decisions to write down
One decision for Reading Execution Plans: The plan was read. The database is named. Nothing was run. And secrets are redacted.
Checks before you call it done
Confirm this before you call the change done: The plan was read. The time is written. Nothing was run. Secrets are redacted. And the database is yours. If one of those fails, stop.
Before you leave the database
Reading Execution Plans 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.
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