Discover how to easily change default isolation level in sql server. If you’re tuning performance or debugging concurrency issues, knowing how to adjust the default isolation level can save you time and headaches. In this guide, you’ll get a practical, step-by-step approach, real-world tips, and quick-reference data so you can apply changes safely in development or production environments.

Quick fact: The default isolation level in SQL Server is Read Committed.
This post covers: what isolation levels exist, how to change the default at the server or database level, and how to verify changes.
Practical formats: step-by-step commands, decision trees, and a quick table of effects for each isolation level.
Resources at the end: useful URLs and references text only, not clickable.

Discover how to easily change default isolation level in sql server. If you’re dealing with phantom reads, row versioning, or blocking, adjusting the isolation level can help you balance consistency and performance. In this guide, you’ll find:

A quick-start set of steps to change the default isolation level
A clear explanation of the trade-offs between Read Committed, Read Committed Snapshot, Repeatable Read, Serializable, and Snapshot isolation
Common gotchas and how to avoid them
A validation checklist to ensure your changes don’t surprise downstream processes

What is an isolation level and why it matters

Isolation levels control how/when the changes made by one transaction become visible to others.
The higher the isolation, the more potential for blocking and reduced concurrency; lower isolation can introduce anomalies.
In SQL Server, you typically adjust the isolation level at the session level or configure defaults at the server or database level.

Key isolation levels in SQL Server

Read Uncommitted: Dirty reads allowed, no shared locks are taken.
Read Committed: Most common default; shared locks prevent dirty reads.
Read Committed Snapshot RCSI: Uses row versioning to avoid blocking reads; does not block writers; requires enabling at database level.
Repeatable Read: Keeps read locks for the duration of the transaction; can still have phantom reads; more blocking.
Serializable: Highest level; inserts and updates can be blocked to guarantee full serializability; can severely limit concurrency.
Snapshot isolation: Similar to RCSI but uses a version store to provide transaction-level consistency; requires enabling at database level and can have tempdb considerations.

When to change the default isolation level

Debugging concurrency issues or diagnosing deadlocks
Reducing blocking for read-heavy workloads
Ensuring consistent reads for long-running analytical queries
Balancing performance vs. data accuracy for specific applications

How to change the default isolation level at the server level
Note: SQL Server does not have a single “server-wide default isolation level” setting you can flip on and off for all sessions. You typically set the default at database level or rely on session-level commands. Here’s how you can approach it:

To encourage a specific behavior per session, you can set the transaction isolation level at the connection level using SQL:
- SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
- SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
- SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
- SET TRANSACTION ISOLATION LEVEL SNAPSHOT;
For database-wide defaults, you mainly rely on enabling Read Committed Snapshot RCSI or enabling Snapshot isolation:
- To enable RCSI for a database:
  - ALTER DATABASE YourDatabase SET READ_COMMITTED_SNAPSHOT ON;
- To enable Snapshot isolation:
  - ALTER DATABASE YourDatabase SET ALLOW_SNAPSHOT_ISOLATION ON;
Important: Enabling RCSI or Snapshot isolation changes how reads behave and can impact tempdb usage and versioning. Plan accordingly.

How to change the default isolation level at the database level recommended approach

RCSI Read Committed Snapshot is a common choice to reduce read-blocking without changing writes behavior.
- Steps:
  - Ensure your database is in a supported state no active transactions that would block.
  - Run: ALTER DATABASE YourDatabase SET READ_COMMITTED_SNAPSHOT ON;
- Effect:
  - Reads do not block writes; readers use versioning to see data as of the start of the statement.
- Considerations:
  - Increased tempdb version store usage; monitor tempdb growth.
Snapshot isolation as an alternative:
- Steps:
  - Enable snapshot isolation: ALTER DATABASE YourDatabase SET ALLOW_SNAPSHOT_ISOLATION ON;
  - Then: ALTER DATABASE YourDatabase SET READ_COMMITTED_SNAPSHOT OFF; optional, if you want to rely on Snapshot as default for reads
- Effect:
  - Transactions can see a consistent snapshot of the data without blocking writers; higher tempdb usage.
- Considerations:
  - Requires careful testing for long-running transactions and version store growth.
If you don’t want to enable RCSI or Snapshot isolation, you can set default at session level for specific apps:
- In your application connection strings, specify:
  - “Current Transaction Isolation Level=ReadCommitted”
  - “Current Transaction Isolation Level=Snapshot” for Snapshot
- Pros:
  - No global impact; per-app control.
- Cons:
  - Developers must remember to set it on each connection; possible inconsistencies.

Useful tips and best practices

Start with Read Committed and measure performance and blocking before moving to a more advanced isolation like RCSI.
When enabling RCSI, run a thorough test in staging to quantify tempdb usage and any unexpected side effects.
Monitor blocking and deadlocks using SQL Server Dynamic Management Views DMVs:
- sys.dm_os_waiting_tasks
- sys.dm_exec_requests
- sys.dm_tran_locks
Use a performance baseline:
- Track query latency, block duration, and deadlock frequency before and after changes
Consider workload type:
- If you have many long-running read queries, RCSI can significantly improve concurrency without sacrificing data visibility.
- For write-heavy systems, Snapshot isolation can help, but watch for version store growth.

Step-by-step quick start: change default behavior for a specific app

Identify the database your app uses:
- Check connection strings or app config.
Decide on the isolation level to implement per session:
- For minimal changes: Use Read Committed default or Read Committed with RCSI enabled.
Implement the change:
- If enabling RCSI:
  - ALTER DATABASE YourDatabase SET READ_COMMITTED_SNAPSHOT ON;
- If enabling Snapshot isolation:
  - ALTER DATABASE YourDatabase SET ALLOW_SNAPSHOT_ISOLATION ON;
Validate changes:
- Run representative workloads
- Check that reads are not blocked and that there is no unexpected behavior
Monitor ongoing impact:
- Use performance monitor and DMVs to observe blocking, wait types, and version store growth
Document the change:
- Note the date, scope, and rationale
Roll back plan:
- If you notice adverse effects, be ready to revert disable RCSI or Snapshot isolation and re-run tests

Real-world scenarios and decision matrix

Scenario A: You have high read latency due to blocking reads on a busy OLTP system
- Consider enabling Read Committed Snapshot RCSI to reduce read blocking.
- Monitor tempdb growth; adjust autogrowth settings as needed.
Scenario B: You need strict serializability for a financial ledger
- Serializable isolation could be appropriate, but it can increase blocking.
- Validate performance impact and consider a combination approach short transactions, targeted isolation.
Scenario C: You run a mixed workload with long-running analytical queries alongside transactions
- Snapshot isolation or RCSI can help with long-running reads, but test memory and version store usage.

Table: quick comparison of isolation levels

Read Uncommitted: No shared locks; possible dirty reads; minimal blocking
Read Committed: Default; shared locks; prevents dirty reads; some blocking
Read Committed Snapshot: Versioned reads; no blocking for reads; increased tempdb usage
Repeatable Read: Keeps read locks; prevents non-repeatable reads; can still see phantom rows; more blocking
Serializable: Highest isolation; prevents phantom reads; heavy blocking; best consistency
Snapshot: Versioning with transaction-level consistency; good for analytics; requires config and tempdb considerations

Performance considerations and data points

Version store usage:
- RCSI and Snapshot elevate versioning in tempdb. Monitor tempdb file sizes and autogrowth policies.
Blocking and deadlocks:
- RCSI often reduces read blocking, but writes can still block each other.
- Monitor for deadlocks after changes; capture with SQL Server Profiler or Extended Events.
Concurrency:
- Higher isolation levels reduce concurrency; plan capacity accordingly.
Backup and restore impact:
- Isolation level does not directly affect backup size, but broader change management may.

Best practices checklist

Before changes:
- Baseline performance metrics
- Identify critical queries and transactions
- Confirm compatibility with applications
During changes:
- Apply in a staging environment first
- Use gradual rollout if possible
- Monitor closely for any new blocking patterns
After changes:
- Validate data consistency and application behavior
- Update runbooks and run daily health checks
- Schedule periodic reviews of isolation settings as workloads evolve

Common pitfalls to avoid

Enabling RCSI without understanding tempdb impact
Assuming all sessions automatically benefit from a global change
Not updating connection strings where necessary
Forgetting to test long-running transactions under new settings

Advanced topics and deeper dive for power users

How to measure version store growth:
- Query sys.dm_tran_version_store_space_usage and related DMVs
How to simulate blocking conditions:
- Create test scenarios that reproduce typical blocking and measure improvements
How to combine isolation with read-committed snapshot and application logic
Impact on replication and high-availability configurations:
- Some replication scenarios may behave differently under certain isolation levels

Troubleshooting quick references

If you see increased tempdb usage after enabling RCSI:
- Consider adding more tempdb files and monitor autogrowth
If reads suddenly block under RCSI:
- Check for long-running transactions that hold version metadata
If you notice increased deadlocks:
- Review critical sections and consider reducing transaction scope or addressing hot resources

Best practices for developers and DBAs

Maintain a per-application isolation policy:
- Avoid a single blanket change; tailor per workload
Keep transactions short:
- Short transactions reduce contention and blocking
Use indexing and query tuning in parallel:
- Better indexes can reduce the need for higher isolation by reducing long-running reads

Data and statistics snippet example figures you might include

Typical performance improvements after enabling RCSI in read-heavy workloads: 20-40% reduction in average read wait times
Tempdb version store growth impact: depends on workload, but plan for a 2-5x increase in steady state compared to non-RCSI
Deadlock rate change: often decreases for read-heavy transactions; write-heavy workloads may vary

Best practices for documentation and change management

Document the initial state, the change rationale, the exact commands run, and the rollback plan
Include the impact assessment, monitoring plan, and success criteria
Maintain a change log and update runbooks

Scalability considerations

Big databases with high write activity:
- RCSI can help reads, but you’ll need to monitor version store growth and adjust tempdb accordingly
Highly concurrent systems:
- Snapshot isolation can be useful but verify compatibility with your OLTP patterns

Frequently Asked Questions

Table of Contents

How do I know which isolation level my session is using?

You can query the current setting with DBCC USEROPTIONS or check the SET options in your session:

DBCC USEROPTIONS
SELECT CASE WHEN SESSION_ISOLATION_LEVEL = 1 THEN ‘READ UNCOMMITTED’ WHEN SESSION_ISOLATION_LEVEL = 2 THEN ‘READ COMMITTED’ … END

Can I set the isolation level per connection string?

Yes. You can specify the desired isolation level in your application’s connection string or issue an explicit SET TRANSACTION ISOLATION LEVEL command after opening the connection.

What is the difference between Read Committed and Read Committed Snapshot?

Read Committed uses locking to prevent dirty reads, which can cause blocking. Read Committed Snapshot uses versioning to avoid blocking reads, but it increases tempdb usage.

How do I enable Read Committed Snapshot?

ALTER DATABASE YourDatabase SET READ_COMMITTED_SNAPSHOT ON;

What are the risks of enabling Snapshot isolation?

Snapshot isolation can increase version store usage in tempdb and may affect certain workloads; test thoroughly for long-running transactions and memory usage.

Will changing the isolation level affect existing transactions?

No, changes affect new transactions started after the change. Existing transactions retain their isolation level until completion.

Can I mix isolation levels across different databases?

Yes, you can configure each database independently; application connections can also specify their own level per session.

How do I revert a change to the previous isolation level?

Disable the feature you enabled e.g., SET READ_COMMITTED_SNAPSHOT OFF or DISABLE SNAPSHOT ISOLATION and test to make sure behavior returns to expected state.

How can I monitor the impact after changing isolation levels?

Use DMVs like sys.dm_exec_requests, sys.dm_tran_locks, and sys.dm_os_wait_stats; monitor for blocking, deadlocks, and wait types. Also watch tempdb usage for RCSI and Snapshot changes.

Are there any licensing or edition considerations?

Most features are available in standard and enterprise editions; verify your specific SQL Server version and edition for any feature constraints.

Useful URLs and Resources

Microsoft Docs – Read Committed Snapshot RCSI on SQL Server
Microsoft Docs – Snapshot Isolation in SQL Server
SQL Server Performance and Tuning Guides
SQL Server DMV Reference sys.dm_exec_requests, sys.dm_tran_locks, sys.dm_os_wait_stats
Microsoft Learn SQL Server tutorials
SQL Server Query Store overview
Best practices for tempdb sizing and configuration

Notes

This guide aims to provide practical steps and best practices for changing the default isolation level where appropriate. Always test changes in a staging environment before applying to production, and monitor performance and application behavior closely after changes.

Discover how to easily change default isolation level in sql server: A Practical Guide to Read Committed Snapshots, Snapshot Isolation, and More

Introduction
Yes, you can change the default isolation level in SQL Server by using database-scoped settings like READ_COMMITTED_SNAPSHOT to switch the default Read Committed behavior to versioned reads, or by enabling SNAPSHOT isolation, as well as by setting the isolation level per connection with SET TRANSACTION ISOLATION LEVEL. This guide breaks down what isolation levels exist, why you’d want to change the default, and how to implement those changes safely. Below you’ll find a step-by-step path, best practices, and real-world tips to help you decide what’s right for your workload.

– What isolation levels are available in SQL Server and how they affect concurrency
– How to enable Read Committed Snapshot RCSI to avoid read locks
– When and how to enable SNAPSHOT isolation and its trade-offs
– Step-by-step commands to change the default at database level
– How to test changes without disrupting production
– Typical pitfalls and how to avoid them
– Quick comparison table of isolation levels for fast decision-making
– How to monitor impact on tempdb and version store
– Real-world scenarios and best-practice recommendations
– How to roll back changes if you run into issues

Useful URLs and Resources un clickable text
Microsoft SQL Server Documentation – docs.microsoft.com
Read Committed Snapshot RCSI – docs.microsoft.com
Snapshot Isolation in SQL Server – docs.microsoft.com
SQL Server Transaction Isolation Levels – en.wikipedia.org/wiki/Isolation_database_systems
Tempdb and Version Store concepts – docs.microsoft.com

Category: General

What are SQL Server isolation levels and why they matter

Isolation levels control how transactions interact with each other and with the data they touch. In SQL Server, you typically deal with these main levels:

– Read Uncommitted: No shared locks are placed and dirty reads are possible.
– Read Committed: The default in SQL Server. Shared locks are used to prevent dirty reads, but data can change between statements within a transaction non-repeatable reads.
– Repeatable Read: Locks rows read by a transaction to prevent non-repeatable reads, but phantom reads can still occur.
– Serializable: The strongest level, preventing phantom reads by holding range locks.
– Snapshot: Uses versioning to present a consistent view of the data as of the start of the transaction, avoiding most blocking but requiring version store in tempdb.

A quick takeaway: the default Read Committed can cause blocking if writers and readers contend for the same data. If you have long-running reads or lots of read-heavy workloads, you might benefit from versioning or snapshot-based isolation.

Why you might want to change the default isolation level

– Improve throughput for read-heavy workloads: Read operations don’t block writers as aggressively when using versioning.
– Reduce blocking and deadlocks: Snapshot-based approaches can minimize conservative locking.
– Simplify application design: RCSI allows reads to be non-blocking even when writes are happening.
– Balance consistency and performance: Snapshot isolation can provide a consistent view while allowing concurrent updates, with some caveats.

But there are trade-offs. Versioning uses tempdb for the version store, which means more tempdb space usage and potential performance implications if versioning grows large. Snapshot isolation can lead to update conflicts that your application must handle gracefully. It’s not a one-size-fits-all decision. test under realistic conditions before flipping production defaults.

How to decide which approach fits your workload

– Read-dominant workloads with long transactions: Consider READ_COMMITTED_SNAPSHOT RCSI to reduce read locks without changing your code path.
– Applications that require a fully snapshot-consistent view across long transactions: Snapshot isolation can help, but plan for potential update conflicts.
– Complex updates with frequent phantom reads: Serializable is strongest but can hurt performance. use it only when necessary.
– Mixed workloads with high write activity: Start with RCSI and monitor version store growth, then consider adjusting.

Enabling Read Committed Snapshot RCSI as the default

RCSI changes the default behavior of Read Committed to use row versioning. This means readers don’t acquire shared locks that block writers, reducing blocking and higher concurrency for many read-heavy apps.

Step-by-step:

1 Identify the target database:
– Run: SELECT name, is_read_committed_snapshot_on FROM sys.databases WHERE name = ‘YourDatabaseName’.

2 Enable Read Committed Snapshot:
– Run: ALTER DATABASE SET READ_COMMITTED_SNAPSHOT ON.
– This changes the default Read Committed behavior to use the version store in tempdb for reads.

3 Verify the change:

4 Monitor impact:
– Check tempdb usage and version store growth periodically: look for tempdb growth and version store usage in sys.dm_tran_version_store_space_usage or similar DMVs.

Important notes:
– RCSI does not change the behavior of active transactions. it only affects new transactions started after the change.
– The version store is stored in tempdb. ensure you have enough tempdb space and configure autogrowth as needed.

Enabling Snapshot isolation SI for a database

Snapshot isolation provides a transactional view based on a versioned data set without locking reads. It requires enabling SNAPSHOT isolation on the database.

1 Enable Snapshot Isolation on the database:
– Run: ALTER DATABASE SET ALLOW_SNAPSHOT_ISOLATION ON.

2 Use Snapshot isolation in a session:
– In your connection, start a transaction with: SET TRANSACTION ISOLATION LEVEL SNAPSHOT.

3 Verify support:
– You can query the database property: SELECT snapshot_isolation_state_desc FROM sys.databases WHERE name = ‘YourDatabaseName’.

Caveats:
– Snapshot isolation can cause update conflicts if two transactions try to modify the same row concurrently.
– It uses the version store in tempdb as well, so monitor tempdb usage similarly to RCSI.

How to change default isolation level at the database level summary

– For Read Committed with versioning RCSI:
ALTER DATABASE SET READ_COMMITTED_SNAPSHOT ON.

– For enabling Snapshot Isolation:
ALTER DATABASE SET ALLOW_SNAPSHOT_ISOLATION ON.

– To revert to classic Read Committed without versioning:
ALTER DATABASE SET READ_COMMITTED_SNAPSHOT OFF.

– To revert Snapshot Isolation support:
ALTER DATABASE SET ALLOW_SNAPSHOT_ISOLATION OFF.

What changes when you flip these switches?
– RCSI: Reads no longer block writers. read queries use the version store.
– SI: Transactions can run with a consistent snapshot but may encounter update conflicts.

How to test changes safely before production

– Create a staging copy of your database to validate behavior.
– Run representative workloads queries that are read-heavy, write-heavy, and mixed.
– Compare blocking and wait statistics before and after changes:
– Use: sys.dm_os_wait_stats to monitor waits
– Use: sys.dm_tran_locks to view locking behavior
– Use: sys.dm_tran_version_store_space_usage to observe version store growth
– Validate data consistency from your application’s perspective:
– Ensure your app logic handles potential update conflicts under SI.
– Run regression tests to confirm business rules are preserved.

Practical testing: a small experiment you can run

– Scenario: Two sessions, one updates a row while the other reads it:
– Session 1: BEGIN TRAN. UPDATE dbo.Products SET Price = Price + 1 WHERE ProductID = 100. — hold
– Session 2: SELECT Price FROM dbo.Products WHERE ProductID = 100. — observe behavior
– Then commit in Session 1.
– Compare how reads behave with and without RCSI or SI enabled.
– Observe if reads wait on locks or if they see a consistent price value.

Real-world considerations and best practices

– Tempdb sizing: Both RCSI and SI rely on the version store in tempdb. Ensure tempdb has enough space and proper autogrowth settings.
– Long-running transactions: If you have long transactions, version store usage increases. Monitor and manage accordingly.
– Conflicts in Snapshot Isolation: If two transactions try to update the same row, one may face an update conflict. Your application should gracefully retry or handle the error.
– Compatibility: Not every workload benefits equally from isolation changes. Start small in staging, measure, and then apply to production if beneficial.
– Backups and maintenance: Changing isolation levels does not remove the need for routine backups or maintenance tasks, but it does affect how you reason about data consistency during long-running operations.

A quick comparison table: isolation levels at a glance

| Isolation Level | Dirty Reads | Non-Repeatable Reads | Phantom Reads | Typical Use Case | Default in SQL Server |
|—————–|————-|———————-|—————|——————|———————–|
| Read Uncommitted | Yes | Yes | Yes | Ad-hoc reporting with no consistency guarantees | Not default |
| Read Committed | No | Yes | Yes | Standard OLTP with blocking avoided for reads | Yes default |
| Repeatable Read | No | No | Yes | When you need repeatable reads within a transaction | No |
| Serializable | No | No | No | Strongest consistency, avoids phantom reads | No |
| Snapshot SI | No | No | No | Consistent view via versioning. may cause update conflicts | No |
| Read Committed Snapshot RCSI | No | No | No | Read-committed with versioning, reduced read blocking | No via toggle |

How to monitor the impact of changing default isolation level

– Check version store usage in tempdb:
– Query: SELECT database_id, COUNT* AS version_store_count FROM sys.dm_tran_version_store_space_usage GROUP BY database_id.
– Monitor tempdb growth:
– Query: SELECT database_id, file_id, type, size_on_disk_bytes FROM sys.database_files WHERE type = 2. — for tempdb files
– Track blocking before and after:
– Query: SELECT session_id, blocking_session_id, wait_type, wait_time_ms, wait_resource FROM sys.dm_os_waiting_tasks WHERE blocking_session_id <> 0.
– Evaluate application performance:
– Use your existing APM or query performance tools to compare latency and throughput with the new isolation settings.

Potential pitfalls to avoid

– Underestimating tempdb needs: The version store grows with long-running transactions. ensure enough space and avoid hitting autogrowth thresholds.
– RCSI may not fix all blocking issues: If you have long-running writes or locking patterns that involve range locks, you might still see blocking.
– SI update conflicts: When two transactions update the same row, one will fail with update conflicts. handle retries in your code.
– Production risk: Always test changes in staging with realistic data and workloads before applying to production.
– Misalignment with application logic: If your application assumes certain visibility rules, confirm behavior under the chosen isolation level.

How to roll back changes if needed

– Revert to classic Read Committed:
– Disable Snapshot Isolation:
– After rollback, thoroughly test application behavior to ensure no surprises in data visibility or concurrency.

Frequently Asked Questions

# Q1: What is the default isolation level in SQL Server?
The default isolation level in SQL Server is Read Committed.

# Q2: What is Read Committed Snapshot Isolation RCSI?
RCSI uses the version store in tempdb to provide non-blocking reads under the Read Committed behavior, reducing read locks while maintaining consistency for reads started after the change.

# Q3: How do I enable RCSI on a database?
ALTER DATABASE SET READ_COMMITTED_SNAPSHOT ON.

# Q4: How do I enable Snapshot isolation SI on a database?
ALTER DATABASE SET ALLOW_SNAPSHOT_ISOLATION ON.

# Q5: What’s the difference between RCSI and Snapshot isolation?
RCSI is an enhancement to Read Committed using the version store for reads. Snapshot isolation provides a completely separate isolation level with a consistent snapshot for a transaction, potentially avoiding many locks but introducing update conflicts.

# Q6: Will enabling RCSI affect performance?
In many read-heavy workloads, yes, it can reduce blocking and improve throughput. However, it increases tempdb usage due to the version store, so monitor space and performance.

# Q7: How do I test the performance impact before applying changes?
Use a staging environment with realistic workload patterns, run representative load tests, and compare blocking, wait statistics, and application latency before and after enabling RCSI or SI.

# Q8: What are the risks of enabling Snapshot isolation?
Update conflicts can occur if multiple transactions modify the same row concurrently. Your application should be designed to handle transient errors and retry where appropriate.

# Q9: Can I enable these options per database only?
Yes, both READ_COMMITTED_SNAPSHOT and SNAPSHOT ISOLATION can be configured per database without affecting other databases on the same server.

# Q10: How can I monitor the version store growth?
Use dynamic management views like sys.dm_tran_version_store_space_usage to track version store usage in tempdb, and monitor tempdb file space accordingly.

# Q11: How does enabling RCSI affect long-running transactions?
Long-running transactions may still keep old version data in the version store. monitor version store growth and tempdb usage to avoid space pressure.

# Q12: Are there scenarios where I should not change the default isolation level?
Yes. In workloads with heavy write contention, or where your application relies on specific locking semantics, changing isolation levels may not provide benefits and could complicate conflict handling.

Quick tips you can apply today

– Start with READ_COMMITTED_SNAPSHOT on a non-production database or in a staging environment to gauge impact before touching production.
– Ensure tempdb has sufficient space and proper autogrowth to handle additional version store traffic.
– Document any changes and add tests that cover data correctness and performance under the new settings.
– If you see new update conflicts with SI, consider adjusting your transaction logic to retry or fall back to a different isolation level for that path.

If you want to dive deeper, I’ve got real-world examples and a side-by-side scenario comparison in the next video. We’ll walk through enabling RCSI, testing with a simulated workload, and validating performance gains while outlining the exact pitfalls to watch for.

Sources:

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