move datafile online

/tmp/t1.dbf，/tmp/t2.dbf移动到+DATA磁盘组。

Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.3.0.0.0
 
SQL> show pdbs;

    CON_ID CON_NAME              OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
     2 PDB$SEED              READ ONLY  NO
     3 PDB01              READ WRITE NO
     4 PDB03              MOUNTED
     5 PDB02              MOUNTED
     6 PDB04              MOUNTED
SQL> alter session set container=pdb01;

Session altered.

SQL> create tablespace t1 datafile '/tmp/t1.dbf' size 100M;

Tablespace created.

SQL> alter database move datafile '/tmp/t1.dbf' to '+DATA';

Database altered.
SQL> alter tablespace t1 add datafile '/tmp/t2.dbf' size 100m;

Tablespace altered.

SQL> alter database move datafile '/tmp/t2.dbf' to '+DATA';

Database altered.