WALLET_ROOT

2.421 WALLET_ROOT

WALLET_ROOT specifies the path to the root of a directory tree containing a subdirectory for each pluggable database (PDB).

Property	Description
Parameter type	String
Syntax	`WALLET_ROOT = wallet-root-directory-path`
Default value	There is no default value.
Modifiable	No
Modifiable in a PDB	No
Basic	No
Oracle RAC	Multiple instances must have the same value.

The name of the various wallet files is always the same, regardless of the component they are associated with. The wallets for each component are stored under each PDB GUID directory within the WALLET_ROOT directory structure in a directory whose name is based on the component name. For example, for the TDE component, the subdirectory name is tde.

The TDE_CONFIGURATION initialization parameter cannot be set unless the WALLET_ROOT parameter is also set.

For example, the contents of the directory at the location specified by the WALLET_ROOT initialization parameter could look as follows, where wallet-root is the directory specified by the WALLET_ROOT parameter:

wallet-root/eus/ewallet.p12
wallet-root/tde/ewallet.p12
wallet-root/tde/ewallet_2016120918333644.p12
wallet-root/tde_seps/cwallet.sso
wallet-root/tls/ewallet.p12
wallet-root/xdb_wallet/ewallet.p12
wallet-root/3FD1C95B48205D0FE053C5A0E40AEF8C/tde/ewallet.p12
wallet-root/3FD1C95B48205D0FE053C5A0E40AEF8C/tde/ewallet_2016110918331622.p12
wallet-root/3FD1C95B48205D0FE053C5A0E40AEF8C/tde/ewallet_2016110918332363.p12
wallet-root/3FD1C95B48205D0FE053C5A0E40AEF8C/tde_seps/cwallet.sso
wallet-root/3FD1C95B48205D0FE053C5A0E40AEF8C/tls/cwallet.sso
wallet-root/3FD1C95B48205D0FE053C5A0E40AEF8C/tls/ewallet.p12

When the WALLET_ROOT parameter is set, you can omit the path from some ADMINISTER KEY MANAGEMENT commands.

The WALLET_ROOT value can include references to environment variables. The following example shows how to use WALLET_ROOT when multiple TDE-enabled databases are installed into the same ORACLE_HOME:

WALLET_ROOT=/etc/ORACLE/KEYSTORES/$ORACLE_SID

The ORACLE_SID environment variable (or the DB_UNIQUE_NAME environment variable for Oracle RAC) makes sure that each database that is installed into the same ORACLE_HOME has its own set of wallets and TDE keys. This sets the root of the wallet directory hierarchy to the directory specified by wallet-root-directory-path.

Note:

The normalized length of the wallet-root-directory-name that is specified with the WALLET_ROOT parameter cannot exceed 255 characters, otherwise one of the following sets of error messages is displayed:

ORA-46693: The WALLET_ROOT location is missing or invalid.
ORA-32021: parameter value longer than 255 characters
ORA-01078: failure in processing system parameters

ORA-46693: The WALLET_ROOT location is missing or invalid.
ORA-07204: sltln: name translation failed due to lack of output buffer space.
ORA-01078: failure in processing system parameters

The normalized length includes the length of expanded environment variables specified with the WALLET_ROOT parameter. The values of the environment variables of the user who starts the instance are used in the normalization of the WALLET_ROOT parameter.

The SHOW PARAMETER WALLET_ROOT command always displays the normalized value (with all the environment variables expanded).

For non-ASM file systems, the PDB GUID-extended paths for the TDE component are created automatically under the directory specified by the WALLET_ROOT parameter when any Transparent Data Encryption (TDE) wallet is created for a PDB.

Enabling Automatic Creation of Directories Under WALLET_ROOT

By using the specific configuration of WALLET_ROOT described in each of the following sub-sections, Oracle Database can be configured to automatically create the necessary pdb-guid and component name directories under the WALLET_ROOT directory path. Other settings of WALLET_ROOT are allowed, but would not result in the automatic creation of the necessary sub-directories by the ASM OMF layer.

Required setting to enable auto-directory creation for a database not using Oracle ASM

For a database not using Oracle ASM filesystems, the WALLET_ROOT parameter needs to be set as follows:

WALLET_ROOT=wallet-root-directory-path

This sets the root of the wallet directory hierarchy to the directory specified by wallet-root-directory-path. For example:

/etc/ORACLE/KEYSTORES/FINANCE

When this is done, Oracle Database automatically creates the directory for the TDE wallet of a CDB$ROOT at the following location:

/etc/ORACLE/KEYSTORES/FINANCE/tde

The directories, that Oracle Database automatically creates for holding the TDE wallets of isolated PDBs, will include the pdb-guid. For example:

/etc/ORACLE/KEYSTORES/FINANCE/3FD1C95B48205D0FE053C5A0E40AEF8C/tde

Required setting to enable auto-directory creation for a database using Oracle ASM with Oracle Managed Files

For a database using ASM with OMF, the WALLET_ROOT parameter needs to begin with a plus sign followed by a disk group name and the value of the DB_UNIQUE_NAME initialization parameter. In the example below, DATA is the name of a disk group and FINRAC is the value of the DB_UNIQUE_NAME initialization parameter:

WALLET_ROOT=+DATA/FINRAC

When this is done, Oracle Database automatically creates the necessary directory within the ASM filesystem at the following location when the ADMINISTER KEY MANAGEMENT CREATE KEYSTORE command is run:

+DATA/FINRAC/tde

For isolated PDBs, the directories that Oracle Database automatically creates for holding the TDE wallets of PDBs will include the pdb-guid. For example:

+DATA/FINRAC/3FD1C95B48205D0FE053C5A0E40AEF8C/tde

Required setting to enable auto-directory creation for RAC-enabled databases

For a RAC-enabled database, only shared TDE wallets are supported (as opposed to individual TDE-wallets per RAC instance). WALLET_ROOT can either point to an ASM disk group, or a directory in ACFS. If the WALLET_ROOT parameter points to +diskgroup/dbname, then the /tde sub-directory is automatically created when issuing an ADMINISTER KEY MANAGEMENT CREATE KEYSTORE command. For example, whenWALLET_ROOT is set to +DATA/FINANCE, the directory +DATA/FINANCE/tde is automatically created. This guarantees that when multiple databases are installed, their TDE-wallets are kept separate.