Use this page to control and configure the DS Agent.
The functionality available on the Agent Configuration page will depend on the rights of the current identity and the version of NDS* that you are looking at.
Agent Triggers
Agent triggers allow you to initiate certain background processes. Most triggers are
equivalent to using a SET DSTRACE=*option command as specified below.
Janitor
On the janitor interval, the following tasks are performed:
- Inherited ACLs are updated
- Synthetic time is checked
- DS Agent credentials are checked and updated if a server rename has occurred
On the cleaner interval, the janitor will update the status of NCP servers that it knows about, and it will purge expired dynamic bindery entries.
Purger
This trigger purges all entries and attributes whose modification time is less than the current purge time. The purge time is advanced after all servers in a replica ring have seen the given change. This trigger is equivalent to using the SET DSTRACE=*J command.Limber
This trigger checks for tree renames, address changes, and keeps a local cache of information about its own NCP server object up-to-date. This cache is kept because a given NCP server cannot be counted on to contain a replica of its own object. On the limber interval, the cache is kept up-to-date by contacting a real replica containing this server's object. Among other things, this cache contains information about index definitions and predicate statistics settings. Details about errors occurring in the limber process can be found through the Agent Process Status page in iMonitor or by using DS Trace with the limber flag set. This trigger is equivalent to using the SET DSTRACE=*L command.Assume All Servers Up
The DS Agent will put servers that it cannot communicate with into a "bad address" cache. This is done to prevent needlessly slowing down background processes which need to communicate with a server that currently cannot be communicated with. Items in this cache are expired every 30 minutes. Use this trigger to get the DS Agent to assume that all servers it needs to communicate with are up. In other words, using this trigger will clear the bad address cache. This trigger is equivalent to using the SET DSTRACE=*A and SET DSTRACE=*U commands together.Replication
Use this trigger to initiate outbound object synchronization. This trigger is equivalent to using the SET DSTRACE=*H command.Schema Synchronization
Use this trigger to initiate outbound schema synchronization. This trigger is equivalent to using the SET DSTRACE=*SS command.Reference Check
Use this trigger to start the process that maintains and expires backlinks and maintains and updates Dynamic Reference Links (DRLs). This trigger is equivalent to using the SET DSTRACE=*B command.
Background Process Settings
Allows you to modify the interval at which certain background processes run. These
settings are equivalent to using the SET DSTRACE=!option command.
Trace Triggers
Shows the Trace flags that must be set in order to display the specified DS Agent
information in DS Trace. These triggers might write large quantities of information to DS
Trace. Generally, it is recommended that these triggers be enabled only when instructed by
Novell* Technical Support.
Agent Synchronization
Lets you to disable or enable inbound or outbound synchronization. You can specify in
hours the amount of time you want synchronization disabled.
Database Cache
Allows you to configure the amount of database cache used by the DS database engine.
Various cache statistics are also provided to assist you in determining whether you have
an appropriate amount of cache available. Having an inadequate amount of cache may
severely impact your system's performance.
If the database cache settings have not been set by the administrator and made permanent, then the DS Agent will automatically adjust the cache settings. At system startup, the DS Agent will start with a temporary hard limit. Later, after all system services have been given a chance to start up, the DS Agent will switch to dynamic adjust mode.
* Novell trademark. ** Third-party trademark. See Legal Notices.