Henrik Warne Henrik Warne - 1 month ago 5
SQL Question

How do you move a partitioned table from one tablespace to another in Oracle 11g?

I have a partitioned table that belongs to tablespace report. I want to move it to tablespace record instead.

One possibility is to drop the table and recreate it in the new tablespace, but that is not an option for me, since there is data in the table that needs to survive the move.

I started by checking that the partitions actually belong to tablespace report with:

SELECT * FROM user_tab_partitions WHERE table_name = 'REQUESTLOG';


Then I just tried:

ALTER TABLE requestLog MOVE TABLESPACE record;


But that gives me error ORA-145111 “cannot perform operation on a partitioned object”.

Then I found out that I can move individual partitions using:

ALTER TABLE requestLog MOVE PARTITION "2009-12-29" TABLESPACE report;


But since there are 60 partitions of the table (based on date), and because I may have to do this for several systems, I would like to loop over all the partition names, moving each to the new tablespace. I tried that, but couldn’t quite get the SQL to work.

Even if I move all the existing partitions to the new tablespace, there is still a problem when creating new partitions. The new partitions are still created in the old tablespace report. How do I change so that new partitions are created in the new tablespace record?

Answer

You have to consider indexes that may be invalidated as well - to cover your question about resetting the default tablespaces in addition to this, I think this is the full process that you'll want to implement:

1) Move partitions (a PL/SQL loop as per zürigschnäzlets' answer)

These are procedures I use within an anonymous block wrapper that defines a_tname, a_destTS, vTname, and vTspName - they should give you the general idea:

procedure mvTabPart (a_tname in varchar2, a_destTS in varchar2) is
cursor pCur(vTname varchar2, vTspName varchar2) is
  select table_name, partition_name
  from user_tab_partitions
  where table_name = vTname
      and tablespace_name not like vTspName
  order by partition_position desc;
begin
for pRow in pCur(a_tname, a_destTS) loop
 sqlStmnt := 'alter table '||pRow.table_name||
             ' move partition '||pRow.partition_name||
             ' tablespace '||a_destTS;
execute immediate sqlStmnt;
end loop;
end mvTabPart;

2) Set table default partition tablespace so new partitions are created there:

    procedure setDefTabPart (a_tname in varchar2, a_destTS in varchar2) is
    cursor tCur(vTname varchar2) is
      select table_name
      from user_part_tables
      where table_name = vTname;
    begin
    for tRow in tCur(a_tname) loop
     sqlStmnt := 'alter table '||tRow.table_name||
                 ' modify default attributes '||
                 ' tablespace '||a_destTS;
    execute immediate sqlStmnt;
    end loop;
end setDefNdxPart;

3) Set index default partition tablespace so new index partitions (if any) are created where you want them:

procedure setDefNdxPart (a_tname in varchar2, a_destTS in varchar2) is
cursor iCur(vTname varchar2) is
  select index_name
  from user_part_indexes
  where index_name in (select index_name
             from user_indexes where table_name = vTname);
begin
for iRow in iCur(a_tname) loop
 sqlStmnt := 'alter index '||iRow.index_name||
             ' modify default attributes '||
             ' tablespace '||a_destTS;
execute immediate sqlStmnt;
end loop;

end setDefNdxPart;

4) rebuild any partitioned indexes that need rebuilding and are not in the desired tablespace:

procedure mvNdxPart (a_tname in varchar2, a_destTS in varchar2) is
cursor ndxCur(vTname varchar2, vTspName varchar2) is
select i.index_name index_name, ip.partition_name partition_name
  from user_ind_partitions ip, user_indexes i
  where i.index_name = ip.index_name
     and i.table_name = vTname
     and i.partitioned = 'YES'
     and (ip.tablespace_name not like vTspName or ip.status not like 'USABLE')
  order by index_name, partition_name ;
begin
for ndxRow in ndxCur(a_tname, a_destTS) loop
 sqlStmnt := 'alter index '||ndxRow.index_name||
             ' rebuild partition '||ndxRow.partition_name||
             ' tablespace '||a_destTS;
execute immediate sqlStmnt ;
end loop;
end mvNdxPart;

5) Rebuild any global indexes

procedure mvNdx (a_tname in varchar2, a_destTS in varchar2) is
cursor ndxCur(vTname varchar2, vTspName varchar2) is
  select index_name
  from user_indexes
  where table_name = vTname
       and partitioned = 'NO'
       and (tablespace_name not like vTspName or status like 'UNUSABLE')
  order by index_name ;
begin
for ndxRow in ndxCur(a_tname, a_destTS) loop
 sqlStmnt := 'alter index '||ndxRow.index_name||
             ' rebuild tablespace '||a_destTS;
execute immediate sqlStmnt ;
end loop;
end mvNdx;