ORA-01554: simultaneity of transaction limit reached the reason

Hi team,

I am getting below error

ORA-01554: transaction concurrency limit violation reason: no cancellation segment found housing available params: 0, 0

Google hit says: Action: stop the system, change the INIT. Operations ORA parameters, rollback_segments or rollback_segments_required, then re-start. _


I'm on 11 GR 2 with oracle enterprise linux. My init.ora settings are as below

SQL > show Cancel parameter;

VALUE OF TYPE NAME
------------------------------------ ----------- ------------------------------
UNDO_MANAGEMENT string AUTO
UNDO_RETENTION integer 900
undo_tablespace string UNDOTBS4
SQL > see the restoration of the parameter;

VALUE OF TYPE NAME
------------------------------------ ----------- ------------------------------
fast_start_parallel_rollback string LOW
rollback_segments chain
transactions_per_rollback_segment integer 5
SQL > see the transaction of the parameter;

VALUE OF TYPE NAME
------------------------------------ ----------- ------------------------------
whole of transactions 8289
transactions_per_rollback_segment integer 5


Any suggestion to avoid this error, without bouncing the database?
Please advice

Thank you

Published by: user12096071 on July 26, 2011 15:14

Queries:

SELECT COUNT(*) FROM V$TRANSACTION ;
SELECT STATUS, COUNT(*) FROM DBA_ROLLBACK_SEGS GROUP BY STATUS ORDER BY STATUS;

should show the number you of transactions and rollback segments how you have active. Unfortunately, these queries must be performed immediately (or shortly after) when the error occurs - if not, some transactions that were completed or some segments of cancellation that went offline may change the image.

Hemant K Collette

Published by: Hemant K grapple on July 27, 2011 10:23

Tags: Database

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