We looked at capability available in the Linux Operating System (OS) - with specific focus on Oracle Linux - but note that these options are available on almost all Linux distributions - especially the ones that are supported by the Oracle Database which include RHEL and SLES. When we started looking at Snapshots - this is no different. One of Dbvisit's goals is to take complex things and make it simple, such as the creation and management of an Oracle Standby Database environment. Some of these come with a large price tag, but they do provide a lot of advanced features of which many are focussed on the enterprise. The next step is to get into snapshots, what is this you may ask? Snapshots is actually a common technology concept that is used and implemented by many vendors of various different products. The first release of this option is expected to be available in 9.0.06 update (November 2019). This document will provide an overview of the Dbvisit Standby Snapshot Option and its various use cases. This all started in the Dbvisit R&D team with a number of ideas which resulted in a proof of concept which was then reviewed by Development and taken on as a project to implement as a optional feature in Dbvisit Standby version 9.x. Cisco ASA Series Command Reference, 8.4, 8.5, 8.6, and 8.Internally the Dbvisit Standby Snapshot Option is known as the RoSH project - which stands for Read Only Standby Herd.The only difference should be the failover lan unit command, which indicates a primary versus secondary. Enter the show run command on both units and compare the results. You should confirm that the configurations are out-of-sync. In general, the only time a write standby should be issued is if you have confirmed that the standby firewall's operational configuration does not match the active firewall's configuration. Refer to the Cisco ASA Series Command Reference, 8.4, 8.5, 8.6, and 8.7 document for more information on write standby. In order to save the configuration on the standby firewall, enter the write memory command from the active firewall. The standby firewall's configuration is not written to flash memory after the configuration is synchronized as noted in the ASA command reference for write standby. Note: This command does not actually issue a write memory command on the standby firewall. The standby CPU load may increase because of the need to recompile the ACL data structures on the Adaptive Security Appliance (ASA) after the configuration rebuilds and resynchronizes. This is a result because the interfaces have reinitialized. In addition, while the configuration is erased, all management sessions to the standby firewall are cleared. This causes the standby to erase its configuration within access control lists (ACLs), interfaces, and so on, and it resynchronizes its full configuration from the active peer. Effectively it issues a clear config all command. When you enter the write standby command, it causes the peer standby firewall to clear out its configuration. Here is some information to help you better understand what happens when that command is used. You almost never need to enter the command write standby. When should I issue the command write standby, and what issues could result if that command is used?Ī. Refer to Cisco Technical Tips Conventions for more information on document conventions. This document provides information on when the write standby command should be used and the effect of the command.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |