DBCA cannot Delete Existing Database with DBT-10201

This is happening when one is trying to delete a database using DBCA utility. The reason for the failure is that there is no information about the database in /etc/oratab:

[[email protected] dbs]$ cat /etc/oratab

# This file is used by ORACLE utilities.  It is created by root.sh
# and updated by either Database Configuration Assistant while creating
# a database or ASM Configuration Assistant while creating ASM instance.

# A colon, ':', is used as the field terminator.  A new line terminates
# the entry.  Lines beginning with a pound sign, '#', are comments.
# Entries are of the form:
# The first and second fields are the system identifier and home
# directory of the database respectively.  The third field indicates
# to the dbstart utility that the database should , "Y", or should not,
# "N", be brought up at system boot time.
# Multiple entries with the same $ORACLE_SID are not allowed.
[[email protected] dbs]$ 

Let’s reproduce it:

[[email protected] dbs]$ echo $ORACLE_SID
[[email protected] dbs]$ dbca -silent -deleteDatabase -sourceDB $ORACLE_SID -sysDBAUserName sys -sysDBAPassword sys -forceArchiveLogDeletion
[FATAL] [DBT-10201] Delete database operation cannot be performed.
   CAUSE: There are no databases present on the system.

Let’s add the information of the database into /etc/oratab file:

[[email protected] dbs]$ echo "cdb1:/u01/app/oracle/product/19.0.0/dbhome_1:Y" > /etc/oratab
[[email protected] dbs]$ cat /etc/oratab
[[email protected] dbs]$

Let’s try again to drop it:

[[email protected] dbs]$ dbca -silent -deleteDatabase -sourceDB $ORACLE_SID -sysDBAUserName sys -sysDBAPassword sys -forceArchiveLogDeletion
[WARNING] [DBT-19202] The Database Configuration Assistant will delete the Oracle instances and datafiles for your database. All information in the database will be destroyed.
Prepare for db operation
32% complete
Connecting to database
35% complete
39% complete
42% complete
45% complete
48% complete
52% complete
ORA-01109: database not open

65% complete
Updating network configuration files
68% complete
Deleting instance and datafiles
84% complete
100% complete
Database deletion completed.
Look at the log file "/u01/app/oracle/cfgtoollogs/dbca/cdb1_dgb/cdb1_dgb.log" for further details.

Happy ending 🙂

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