Serializable Isolation Level

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What does a transaction in the serializable isolation level see?

Only the query itself

Changes made after the transaction began

Changes committed at the time the transaction began (correct)

Changes made by other users

When is serializable isolation level suitable?

For environments with frequent dirty reads

For environments with short transactions updating a large number of rows

For environments with long-running read-only transactions (correct)

For environments with high chances of concurrent transactions modifying the same rows

What is guaranteed in serializable isolation regarding the read consistency of a transaction?

Every row read by the transaction will be different when reread

Changes made by other transactions are immediately visible to the query

Results of queries may change during the transaction

The results of any query will remain consistent for the duration of the transaction (correct)

What types of reads do serializable transactions not experience?

Dirty reads, fuzzy reads, and phantom reads Signup and view all the answers

When can a serializable transaction modify a row in Oracle Database?

Only if changes made by other transactions were committed before the start of the serializable transaction Signup and view all the answers

What error message does the database generate when a serializable transaction attempts to update or delete data modified by a different transaction that committed after the serializable transaction began?

ORA-08177: Cannot serialize access for this transaction Signup and view all the answers

In the event of a serializable transaction failing with the ORA-08177 error, what action can an application take?

Commit the work executed up to that point Signup and view all the answers

To prevent a serialized access problem in a serializable transaction, what action should be avoided?

Trying to update data modified by another transaction Signup and view all the answers

What happens if a serializable transaction does not attempt to change a row committed by another transaction after it began?

A serialized access problem is avoided Signup and view all the answers

In the context of serializable transactions, what does 'serializable access problem' refer to?

Conflicts arising from simultaneous access to the same data by multiple transactions Signup and view all the answers

Where was Mahatma Gandhi born and raised?

Gujarat Signup and view all the answers

How did Gandhi describe his philosophy of resistance?

Nonviolent resistance Signup and view all the answers

What honorific title was given to Gandhi in South Africa in 1914?

Mahātmā Signup and view all the answers

Where did Gandhi train in law before returning to India?

Inner Temple in London Signup and view all the answers

In what year did Gandhi move to South Africa to represent an Indian merchant?

1893 Signup and view all the answers

What did Gandhi focus on after assuming leadership of the Indian National Congress in 1921?

Easing poverty and expanding women's rights Signup and view all the answers

At what age did Gandhi return to India from South Africa?

45 Signup and view all the answers

What was Gandhi's primary goal throughout his leadership?

Ending untouchability and achieving self-rule Signup and view all the answers

Where did Gandhi first employ nonviolent resistance in a campaign for civil rights?

South Africa Signup and view all the answers

What did the honorific title 'Mahātmā' mean?

Great-souled, venerable Signup and view all the answers