Question

I wanted to create the copy of a table using the following sql command in oracle:

create table table_backup as select * from paper_search;

I encountered the error like this

 [Err] ORA-01652: unable to extend temp segment by 8192 in tablespace

Since the table paper_search is 20GB of size. I googled and found increasing the TEMP memory size in oracle but I have no idea how to solve this any suggestion will be highly appreciated.

Answer 1

If you can’t find enough space for your temp segment (see Orangecrush’s answer), you may want to consider creating the table and populating it in separate steps – e.g.

create table table_backup as select * from paper_search where 1=0;

then

insert into table_backup select * from paper_search where id between :1 and :2;

in a loop with suitable ranges for id, committing between each batch (so that you don’t need so much temp space).

This is just a rough solution and may not be feasible depending on your requirements (e.g. whether it should take into account concurrent inserts/updates/deletes on the table while your batch job is running).