How do you resolve ORA-00060 deadlock detected?

Too high activity – Re-running the job during a less busy period can fix this ORA-00060 deadlock error. Poor application design – As noted in the trace file: “The following deadlock is not an ORACLE error. It is a deadlock due to user error in the design of an application or from issuing incorrect ad-hoc SQL.”

What is Oracle deadlock?

A deadlock occurs when two or more sessions are waiting for data locked by each other, resulting in all the sessions being blocked. Oracle automatically detects and resolves deadlocks by rolling back the statement associated with the transaction that detects the deadlock.

How deadlock is fixed in Oracle?

Resolving Deadlock

1. Ask the session getting deadlock error ORA-00060 to issue either COMMIT or ROLLBACK.
2. Ask the waiting session to kill the SQL / transaction.
3. Look inside alert log / trace file for the sessions involved in deadlock and inform application team to improve the code.

How can we avoid deadlock in Oracle?

LOCK IN SHARE MODE ), try using a lower isolation level such as READ COMMITTED . When modifying multiple tables within a transaction, or different sets of rows in the same table, do those operations in a consistent order each time. Then transactions form well-defined queues and do not deadlock.

Why is ora-00060 deadlock detected while waiting for resource?

The ORA-00060 deadlock error details note: Cause: Transactions deadlocked one another while waiting for resources. Action: Look at the trace file to see the transactions and resources involved. Retry if necessary. Too high activity – Re-running the job during a less busy period can fix this ORA-00060 deadlock error.

How to analyze deadlocks ( error code 00060 )?

To analyze this file the following note is really helpful 84348 – Oracle deadlocks, ORA-00060 DEADLOCK DETECTED ( ORA-00060 ) [Transaction Deadlock] The following deadlock is not an ORACLE error. It is a deadlock due to user error in the design of an application or from issuing incorrect ad-hoc SQL.

What’s the error code for Oracle transaction deadlock?

DEADLOCK DETECTED ( ORA-00060 ) [Transaction Deadlock] The following deadlock is not an ORACLE error. It is a deadlock due to user error in the design of an application or from issuing incorrect ad-hoc SQL.

What to do when Oracle database is deadlocked?

To resolve deadlock conditions with Oracle, the DBA needs to work together with the developer and software engineering team to modify or rewrite the database application code so that such deadlocks do not reoccur.