- A single Group can launch only same type of EC2 instance.
- A single Group can launch only one type of AMI
- AMI's need to be present in the same region, rather same zone
- We can not used this group to scale RDS instance
- If we keep ELB as one level higher than Auto Scaling Group, when Scale Down happens, the process instructs ELB to remove EC2 instance from ELB group first.
- Should be cautious about using Elastic IP with Auto Scaling Group. It may not be a cost effective option.
- Max # of Launch configuration per AWS account is 100.
Logged operations are replicated. These include, but are not limited to: DDL DML Create/alter table space Create/alter storage group Create/alter buffer pool XML data. Logged LOBs Not logged operations are not replicated. These include, but are not limited to: Database configuration parameters (this allows primary and standby databases to be configured differently). "Not logged initially" tables Not logged LOBs UDF (User Defined Function) libraries. UDF DDL is replicated. But the libraries used by UDF (such as C or Java libraries) are not replicated, because they are not stored in the database. Users must manually copy the libraries to the standby. Note: You can use database configuration parameter BLOCKNONLOGGED to block not logged operations on the primary.
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