Create tablespaces and users, delete

Check the table space path and size:

  select tablespace_name,file_id,bytes/1024/1024 兆,file_name from dba_data_files order by file_id;

Create tablespace:

  create tablespace spacename datafile  '/opt/oracle/app/oradata/orcl/spacename .dbf'size 200m autoextend on  next 32m maxsize 2048m;

Create user:

  create user username identified by userpassword default tablespace spacename ;

Authorized User:

  grant connect,resource,dba to username ;

 

Drop the tablespace and delete the datafiles at the same time:

drop tablespace test_data ;

 Deleting data files including contents and datafiles should be used with caution.

 

 Move the table to another tablespace:

select 'alter table '||tname||' move  tablespace hebeihotel;' from tab ;

 

Moving the table to another tablespace will make the index unavailable:

Find the index under the user:

select * from user_indexes ui where ui.table_owner='username';

index rebuild

Rebuild with index status as unusable:

select 'alter index HEBEIHOTEL.'||index_name||' rebuild' abc from user_indexes where status='UNUSABLE'

turn the search results into rows,

select replace(wm_concat(t.abc),',',';') from
(
select 'alter index HEBEIHOTEL.'||index_name||' rebuild' abc from user_indexes where status='UNUSABLE'

)t;

Then copy it into editplus and replace all ; with regular expressions with ;\n

It is convenient to run all directly in oracle.

 

 Find the tablespace name, size, free space, and file path.

select b.file_id file ID number,
       b.tablespace_name tablespace name,
       b.bytes / 1024 / 1024 || 'M' number of bytes,
       (b.bytes - sum(nvl(a.bytes, 0))) / 1024 / 1024 || 'M' used,
       sum(nvl(a.bytes, 0)) / 1024 / 1024 || 'M' free space,
       100 - sum(nvl(a.bytes, 0)) / (b. bytes) * 100 occupancy percentage,
       b.file_name file path
  from dba_free_space a, dba_data_files b
 where a.file_id = b.file_id
 group by b.tablespace_name, b.file_id, b.bytes,b.file_name
 order by b.file_id;