How to connect Oracle 19c Database - oracle

Question

I am trying to connect to pluggable databases previously created and could not do it.
Option 1
SQL> conn /as sysdba;
Connected.
SQL> conn system/system
ERROR:
ORA-01033: ORACLE initialization or shutdown in progress
Process ID: 0
Session ID: 0 Serial number: 0
Warning: You are no longer connected to ORACLE.
SQL>
Warning: You are no longer connected to ORACLE.
/
Option 2
SQL> show pdbs;
SQL> conn / as sysdba;
Connected.
SQL> show pdbs;
SQL> alter pluggable database orclpdb open;
alter pluggable database open
*
ERROR at line 1:
ORA-01109: database not open
Previously I had connected using sql developer and worked.
Updated
My database is not mounted and I tried to mount it and shows the below error details.
SQL> conn / as sysdba;
Connected.
SQL> show con_name;
CON_NAME
------------------------------
CDB$ROOT
SQL> select open_mode from v$database;
select open_mode from v$database
*
ERROR at line 1:
ORA-01507: database not mounted
SQL> alter database mount;
alter database mount
*
ERROR at line 1:
ORA-00214: control file
'E:\APP\ORACLE\FAST_RECOVERY_AREA\PROD\CONTROLFILE\O1_MF_JCWYX5LY_.CTL' version
102600 inconsistent with file
'E:\APP\ORACLE\ORADATA\PROD\CONTROLFILE\O1_MF_JCWYX5BQ_.CTL' version 102597
SQL> show parameter control
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
control_file_record_keep_time integer 7
control_files string E:\APP\ORACLE\ORADATA\PROD\CON
TROLFILE\O1_MF_JCWYX5BQ_.CTL,
E:\APP\ORACLE\FAST_RECOVERY_AR
EA\PROD\CONTROLFILE\O1_MF_JCWY
X5LY_.CTL
control_management_pack_access string DIAGNOSTIC+TUNING

Answer 1

This is because the CDB is at MOUNT, not OPEN, you should open the root container before using PDB.
SQL> conn / as sysdba
Connected.
SQL> show con_name
CON_NAME
------------------------------
CDB$ROOT
SQL> select open_mode from v$database;
OPEN_MODE
--------------------
MOUNTED
To open the CDB, you may issue the following SQL command or bounce it.
SQL> alter database open;
Database altered.
Then show pdbs again.
SQL> show pdbs;
CON_ID CON_NAME OPEN MODE RESTRICTED
---------- ------------------------------ ---------- ----------
2 PDB$SEED READ ONLY NO
3 ORCLPDB READ WRITE NO
If the PDB is still MOUNTED, then you should open it.
SQL> alter pluggable database orclpdb open;
Pluggable database altered.