ORA-01631: max # of extents nnn reached in table xxxx
ORA-01631: max # of extents nnn reached in table <table-name>
For each table a maximum number of extents can be specified. This error
means that in order to accommodate some new data Oracle needed to extend
a table but could not because the maximum number of extents have been reached.
The error reports back both the current (maximum) number of extents and
the table name.
This error is often also symptomatic of the next extent size being too
Increase the maximum number of extents allowed for the table, i.e:
alter table <table-name> storage (maxextents 500);
or alternatly remove the limit on the number of extents, i.e.:
alter table <table-name> storage (maxextents unlimited);
and try the operation again. It is probably also worth reviewing the
size of the next extent, i.e.:
select next_extent from dba_tables where table_name=<table_name>;
If the next extent size is ‘small’ (when considering the quantity of
data to be stored) then consider increasing it.
This page represents one page of many pages of notes I made whilst working
with Oracle 7 through to 10i. I now no longer work with Oracle databases,
but hope that these notes will continue to be of benefit to others.
About the author: Brian Cryer
is a dedicated software developer and webmaster. For his day job he
develops websites and desktop applications as well as providing
IT services. He moonlights as a technical author and consultant.