An (automatic) undo segment has 34 slots in the transaction table (the thing in the undo segment header). If you and up with a small number N of undo segments then you can't have more than 34. N concurrent transactions active because each one needs a transaction table slot and the next attempt to start a transaction would see ORA-01554. 'But I thought oracle db would create more undo segments, when needed.' Around 100 tx to 100000 tx, so again as You said very high slope. And 12x34 is. (automatic) undo segment has 34 slots in the transaction table (the thing in the undo segment header).
Last updated on NOVEMBER 06, 2019
Applies to:
Siebel Financial Services CRM - Version 16.7 [IP2016] and laterInformation in this document applies to any platform.
Symptoms
Upgrep fails when running IRM from Siebel 8.1.1.10 to 16.7 in the step Prepare for index creation ,
the following error occurs.
ERROR
-----------------------
create unique index S_ACCELERATOR_U1 on S_ACCELERATOR
('COMMAND_ID', 'NAME', 'WS_ID', 'WS_OBJ_VER') parallel nologging
tablespace SIEBELINDEX
2017-01-05 01:23:01 [tp][ODBC Oracle driver][Oracle]ORA-12801: error signaled in parallel query server P057
ORA-01554: transaction concurrency limit reached reason:no undo segment found with available slot params:0, 0
2017-01-05 01:23:01
2017-01-05 01:23:01 S1000: [tp][ODBC Oracle driver][Oracle]ORA-12801: error signaled in parallel query server P057
2017-01-05 01:23:01 ORA-01554: transaction concurrency limit reached reason:no undo segment found with available slot params:0, 0
2017-01-05 01:23:01
2017-01-05 01:23:01 Dropping index with the same column signature and retrying..
2017-01-05 01:23:01 create unique index S_ACCELERATOR_U1 on S_ACCELERATOR
2017-01-05 01:23:01 ('COMMAND_ID', 'NAME', 'WS_ID', 'WS_OBJ_VER') parallel nologging
2017-01-05 01:23:01 tablespace SIEBELINDEX
STEPS
-----------------------
The issue can be reproduced at will with the following steps:
1. set the undo_management to manual as per the upgrade guide.
2.Run upgrep.
the following error occurs.
ERROR
-----------------------
create unique index S_ACCELERATOR_U1 on S_ACCELERATOR
('COMMAND_ID', 'NAME', 'WS_ID', 'WS_OBJ_VER') parallel nologging
tablespace SIEBELINDEX
2017-01-05 01:23:01 [tp][ODBC Oracle driver][Oracle]ORA-12801: error signaled in parallel query server P057
ORA-01554: transaction concurrency limit reached reason:no undo segment found with available slot params:0, 0
2017-01-05 01:23:01
2017-01-05 01:23:01 S1000: [tp][ODBC Oracle driver][Oracle]ORA-12801: error signaled in parallel query server P057
2017-01-05 01:23:01 ORA-01554: transaction concurrency limit reached reason:no undo segment found with available slot params:0, 0
2017-01-05 01:23:01
2017-01-05 01:23:01 Dropping index with the same column signature and retrying..
2017-01-05 01:23:01 create unique index S_ACCELERATOR_U1 on S_ACCELERATOR
2017-01-05 01:23:01 ('COMMAND_ID', 'NAME', 'WS_ID', 'WS_OBJ_VER') parallel nologging
2017-01-05 01:23:01 tablespace SIEBELINDEX
STEPS
-----------------------
The issue can be reproduced at will with the following steps:
1. set the undo_management to manual as per the upgrade guide.
2.Run upgrep.
Cause
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In this Document
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Cause |
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Last updated on SEPTEMBER 04, 2019 Texas holdem poker sites.
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.4 and laterInformation in this document applies to any platform.
Oracle Undo Size
Oracle Who Is Using Undo
Symptoms
Below error message reported in the alert log file.
Changes
Cause
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Symptoms |
Changes |
Cause |
Solution |
References |