V$WALLET displays metadata of certificates that may be used as a master key for transparent data encryption.
| Column | Datatype | Description | 
|---|---|---|
| CERT_ID | VARCHAR2(52) | A unique certificate identifier value used to specify a particular PKI certificate for use as the master key | 
| DN | VARCHAR2(255) | Distinguished name of a particular PKI certificate | 
| SERIAL_NUM | VARCHAR2(40) | Unique serial number assigned to a certificate by the issuer or signer | 
| ISSUER | VARCHAR2(255) | Distinguished name of the Certificate Authority or issuer that issued and signed the certificate | 
| KEYSIZE | NUMBER | Size of the PKI key associated with the certificate | 
| STATUS | VARCHAR2(16) | Current status of the certificate: 
 This column allows the user to identify whether a certificate is currently in use or has already been used for transparent database encryption. |