Specifications

Overview of Setting up Redundant License Servers
SentinelLM System Administrator’s Guide 45
Using Reservation Files
You may use reservation files to reserve license tokens for particular users or
groups of users. The reservation file applies to a specific license server, and may
not reserve more than the total number of tokens initially allocated to that license
server.
Members of a single group can request as many tokens as have been reserved for
them, even if the license server doesn’t currently have that many; if borrowing is
enabled, additional tokens will be borrowed from other license servers. Members
outside of that group cannot use tokens reserved for the group.
Only tokens not reserved for a group can be borrowed by other license servers.
For example, if a license server’s allocation is 10 tokens and all of them are
reserved, this license server will not grant tokens to another license server
requesting tokens.
For details on reservation files and on using WlsGrMgr to create and edit the
reservation file, see “Chapter 6 - Setting User Options” on page 109.
Enabling/Disabling Automatic License Balancing
By default, automatic license balancing is enabled for redundant license servers.
The way license balancing is achieved is that when one redundant license server
is running low on license tokens, it borrows tokens from another redundant
license server. Because SentinelLM automatically determines the optimal license
balance among the redundant license servers, you do not need to do anything
else to balance license tokens.
If you want to use license balancing, at least one license token must be allocated
to each redundant license server. You may choose to turn license balancing off
by disabling token borrowing or by assigning all tokens to a single redundant
license server (zeroing the rest of the license servers).
If borrowing is turned off for all license servers, only one license server will be
able to issue license tokens. All clients must connect to that license server. If that
license server fails, another license server automatically takes over and all clients
are automatically reconnected to the new license server. WlmAdmin or lspool