Datafile extend or add new file

I am a new oracle dba. I am concerned that one of the files is getting low on space. Running oracle 8i on AIX. Does the file automatically extend or does it create a new file? I think I have to create a new file, just not sure.

Thanks;)

Check how was it created, meaning, if autoextend is allowed for it.
Either way, I do prefer to control my tablespaces myself so I used (Ora8i) to create datafiles with autoextend set to OFF then add datafiles as needed.

If you want to learn, then you should write a query to join these views and figure out how much
free space you have in each tablespace. You should join the two tables with tablespace_name
and file_id. Now you can make the query work for what you are looking for. This is 11g, your
version of Oracle is different.

By the way if you are learning Oracle why start with a 10+ year old version of Oracle? :rolleyes:

Code:

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SQL> desc DBA_FREE_SPACE
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 TABLESPACE_NAME                                    VARCHAR2(30)
 FILE_ID                                            NUMBER
 BLOCK_ID                                          NUMBER
 BYTES                                              NUMBER
 BLOCKS                                            NUMBER
 RELATIVE_FNO                                      NUMBER

SQL> desc dba_data_files
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------------------
 FILE_NAME                                          VARCHAR2(513)
 FILE_ID                                            NUMBER
 TABLESPACE_NAME                                    VARCHAR2(30)
 BYTES                                              NUMBER
 BLOCKS                                            NUMBER
 STATUS                                            VARCHAR2(9)
 RELATIVE_FNO                                      NUMBER
 AUTOEXTENSIBLE                                    VARCHAR2(3)
 MAXBYTES                                          NUMBER
 MAXBLOCKS                                          NUMBER
 INCREMENT_BY                                      NUMBER
 USER_BYTES                                        NUMBER
 USER_BLOCKS                                        NUMBER
 ONLINE_STATUS                                      VARCHAR2(7)

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The version of Oracle is what my employer is currently using. It is a small part of the business but I want to make sure it is successful. Thank you for your help everyone.