ORA-21522
        attempted to use an invalid connection in OCI (object mode only)
        
        
        Cause
        User attempted to use an invalid connection or a connection that has been terminated in an OCI environment (object mode), or user attempted to dereference a REF obtained from a connection which has been terminated.
        Action
        Ensure that the connection exists and is still valid.
        
     
    
    
        ORA-21522
        attempted to use an invalid connection in OCI (object mode only)
        
        
        Cause
        User attempted to use an invalid connection or a connection that has been terminated in an OCI environment (object mode), or user attempted to dereference a REF obtained from a connection which has been terminated.
        Action
        Ensure that the connection exists and is still valid.
        
     
    
    
        ORA-21522
        attempted to use an invalid connection in OCI (object mode only)
        
        
        Cause
        User attempted to use an invalid connection or a connection that has been terminated in an OCI environment (object mode), or user attempted to dereference a REF obtained from a connection which has been terminated.
        Action
        Ensure that the connection exists and is still valid.