Ransomware attackers specifically target and attempt to destroy backup systems to increase the probability of payment. Hardening your system is critical. Please ensure you have reviewed your platform security using the Security Hardening Checklist
Cohesity

COHESITY Documentation

Explore our documentation to get started, discover products & new features, access troubleshooting guides, register sources, platforms support.

Products
Data Security Alliance
Visit Cohesity.com
Demos
Support
Blogs
Developers
Partner Portals
Cohesity Community
© 2026 Cohesity, Inc. All Rights Reserved.
Terms of Use|
Privacy Policy|
Legal|
  1. Home
  2. NetBackup™ for Oracle Administrator's Guide
  3. Appendix A. Deduplication best practices
  4. Oracle stream handler
NetBackup™ for Oracle Administrator's Guide

Oracle stream handler

In NetBackup 10.0 and later, the Oracle stream handler is enabled (by default) for all new clients that have no existing images. As with previous versions, the Oracle stream handler only supports stream-based backups and you can configure the Oracle stream handler using the cacontrol command line utility. You can enable and disable the stream handler per the following:

  • Policy and client

  • Policy level

  • Stream type level

Note:

When you use the Oracle stream handler, it is not recommended to use variable-length deduplication.

The cacontrol command utility with the --sth flag, is used to override the default behavior of NetBackup by creating a Marker Entry for a client, policy, or stream type in a configuration file. The cacontrol command utility is located in the following locations:

  • Windows: install_path\Cohesity\pdde\cacontrol

  • UNIX: /usr/openv/pdde/pdcr/bin/cacontrol

In the following examples for cacontrol, STHTYPE must be set to Oracle to configure the Oracle stream handler.

When using the cacontrol command utility to create a Marker Entry in NetBackup 10.0 and later, priority is given to the more granular configuration. For example:

Marker Entry 1: <Client1> <Policy1> to enabled
Marker Entry 2: <Policy1> to disabled

The stream handler is enabled because the more granular configuration in Marker Entry 1 has higher priority.

In NetBackup 10.0 and later, you can configure cacontrol using the following options:

  • You can query the settings for the stream handler per client and policy.

    cacontrol --sth get <STHTYPE> <CLIENT> <POLICY> [SPAUSER]
  • You can enable the stream handler per client and policy.

    cacontrol --sth update 
    <STHTYPE> <CLIENT> <POLICY> [SPAUSER] <enabled>
  • You can delete the settings for a client and policy (return to default behavior).

    cacontrol --sth delete <STHTYPE> <CLIENT> <POLICY> [SPAUSER]
  • You can disable the stream handler on a client and policy.

    cacontrol --sth update 
    <STHTYPE> <CLIENT> <POLICY> [SPAUSER] <disabled>
  • You can query the settings for the stream handler per policy.

    cacontrol --sth getbypolicy <STHTYPE> <POLICY> [SPAUSER]
  • You can enable the stream handler per policy.

    cacontrol --sth updatebypolicy 
    <STHTYPE> <POLICY> [SPAUSER] <enabled>
  • You can delete the settings for the stream handler per policy (return to default behavior).

    cacontrol --sth deletebypolicy <STHTYPE> <POLICY> [SPAUSER]
  • You can disable the stream handler per policy.

    cacontrol --sth updatebypolicy 
    <STHTYPE> <POLICY> [SPAUSER] <disabled>
  • You can query the settings for the stream handler per stream handler type.

    cacontrol --sth getbytype <STHTYPE> [SPAUSER]
  • You can enable a stream handler per stream handler type.

    cacontrol --sth updatebytype <STHTYPE> [SPAUSER] <enabled>
  • You can delete the settings for a stream handler (return to default behavior).

    cacontrol --sth deletebytype <STHTYPE> [SPAUSER]
  • You can disable the stream handler per stream handler type.

    cacontrol --sth updatebytype <STHTYPE> [SPAUSER] <disabled>

Feedback

Was this page helpful?
Previous

Optimizing and deduplicating stream-based and proxy copy Oracle backups

Next

Configuring a stream-based Oracle backup

Feedback

Was this page helpful?