The good old ORA-01555 rollback too small 2005-02-09 - By Kline.Michael
ORA-01555 (See ORA-01555.ora-code.com): snapshot too old: rollback segment number 3 with name "RBS02"
too small
Production got one of these last night from two huge jobs trying to run
against a table in the range of 200M rows. They were reading this table
based on perhaps months and codes to build another table. So perhaps job
A was reading "base" to build "job_a_table" based on current month and a
set of codes, and job B was reading "base" to build "job_b_table" based
on a different set of criteria.
I would normally assume this would have been just fine.
If not, is there any "locking" that can be done to stop the ORA-01555 (See ORA-01555.ora-code.com)?
(I still suspect some where along the line, someone tried to update
while these jobs were running.)
This has been running fine in the past. There are some new jobs being
brought into production.
Oracle is 8.1.7.4 on HP-UX. Rollback capacity is in the vicinity of 32
GB and has never ran out yet.
Michael Kline
Database Administration
SunTrust Technology Center
1030 Wilmer Avenue
Richmond, Virginia 23227
Outside 804.261.9446
STNet 643.9446
Cell 804.744.1545
<mailto:michael.kline@(protected)> michael.kline@(protected)
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