ORA-01157: cannot identify/lock data file 206 – see DBWR trace file

ERROR

ORA-01157: cannot identify/lock data file 206 – see DBWR trace file
ORA-01110: data file 206: ‘+DATA’

SOLUTION

If you are using XML in your database and you are trying to update any XML data, then above error may come.

Step 1: Add below line in your parameter file and bounce the database if not there.

*.dispatchers='(PROTOCOL=TCP) (SERVICE=PRODXDB)’

Step 2: Unlock the XDB user if locked.

SQL> alter user XDB account unlock;

Step 3:  If you have created a duplicate database or open standby database read/write mode, then source TEMP tablespaces will no more valid. drop your TEMP tablespace and create new TEMP tablespace and make it default.

SQL> DROP TABLESPACE TEMP  INCLUDING CONTENTS AND DATAFILES;

SQL> create temporary tablespace TEMP02 tempfile ‘/u02/apps/ORCL/temp_02.dbf’ size 1024M autoextend on; 

SQL> alter database default temporary tablespace TEMP02;

Bounce the database. Now sure the above error will not come.