ORA-24324: service handle not initialized

I got ” ORA-24324: service handle not initialized ”  error in Oracle database.

ORA-24324: service handle not initialized

Details of error are as follows.

ORA-24324: service handle not initialized

Cause: An attempt was made to use an improper service context handle.

Action: Verify that the service context handle has all the parameters initialized prior to this call.

SQL> startup
ORACLE instance started.

Total System Global Area 2147483648 bytes
Fixed Size 1268508 bytes
Variable Size 1124074724 bytes
Database Buffers 1006632960 bytes
Redo Buffers 15507456 bytes
Database mounted.
ORA-01092: ORACLE instance terminated. Disconnection forced

SQL> shutdown immediate
ORA-24324: service handle not initialized
ORA-01041: internal error. hostdef extension doesn't exist

service handle not initialized

This ORA-24324 error is related to the attempt was made to use an improper service context handle.

Verify that the service context handle has all the parameters initialized prior to this call.

Some datafiles cannot be read because are offline or corrupted.

Check the OFFLINE files:

select file#, status, name from v$datafile where status not in ('SYSTEM', 'ONLINE');

SQL> startup mount;
SQL> alter database datafile  file1#, .. , filen# online;

 SQL> recover database;

SQL > alter database open ;

SQLNET.AUTHENTICATION_SERVICES= (NULL)

Third case is as follows, read the following post.

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