What is use of rollback segments in Oracle database?
Submitted by: AdministratorWhen a user updated a particular table (for example 100 rows) the old value will be retained in the roll back segments(Oracle 8) and now it is Undo segment (oracle 9i). If the user issue a rollback command the old value will be taken from the rollback segment(that too if undo_retention parameter set properly in the parameter file).
Submitted by: Administrator
Submitted by: Administrator
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