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RAC Useful Parameters

RAC Useful Parameters

cluster_interconnects specify a specific IP address to use for the inetrconnect
_gcs_fast_config enables fast reconfiguration for gcs locks (true|false)
_lm_master_weight controls which instance will hold or (re)master more resources than others
_gcs_resources controls the number of resources an instance will master at a time
_lm_tickets controls the number of message tickets
_lm_ticket_active_sendback controls the number of message tickets (aggressive messaging)
_db_block_max_cr_dba limits the number of CR copies per DBA on the buffer cache (see grd)
_fairness_threshold used when too many CR requested arrive for a particular buffer and the block becomes disowned (see grd)
_gc_affinity_time specifies interval minutes for reamstering
_gc_affinity_limit defines the number of times a instance access the resource before remastering
_gc_affinity_minimum defines the minimum number of times a instance access the resource before remastering
_lm_file_affinity disables dynamic remastering for the objects belonging to those files
_lm_dynamic_remastering enable or disable remastering
_gc_defer_time define the time by which an instance deferred downgrading a lock (see Cache Fusion)
_lgwr_async_broadcast change the SCN boardcast method (see troubleshooting)



About Syed Saad Ali

With 13 years of experience as a certified and skilled Oracle Database Administrator, I possess the expertise to handle various levels of database maintenance tasks and proficiently perform Oracle updates. Throughout my career, I have honed my analytical abilities, enabling me to swiftly diagnose and resolve issues as they arise. I excel in planning and executing special projects within time-sensitive environments, showcasing exceptional organizational and time management skills. My extensive knowledge encompasses directing, coordinating, and exercising authoritative control over all aspects of planning, organization, and successful project completions. Additionally, I have a strong aptitude for resolving customer relations matters by prioritizing understanding and effective communication. I am adept at interacting with customers, vendors, and management, ensuring seamless communication and fostering positive relationships.

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