You inherited a busy InnoDB OLTP Instance with 100 schemas and 100 active users per...

Oracle 1z0-888 Question Answer

You inherited a busy InnoDB OLTP Instance with 100 schemas and 100 active users per schema.

Total dataset size is 200G with an average schema size of 2G.

The data is transient and is not backed up and can be repopulated easily.

Performance and responsiveness of the DB is paramount.

The query pattern for the DB instance is split 90/10 read/write.

DB host is dedicated server with 256G RAM and 64 cores.

One of your colleagues made some recent changes to the system and users are now complaining of performance impacts.

Which four configuration file edits might your colleague have performed to cause the negative DB performance? (Choose four.)

table_open_cache = 64

innodb_buffer_pool_instances=64

innodb_buffer_pool_size=200G

log_bin=mysql –bin

Innodb_flush_log_at_trx_commit=1

sync_binlog=10

innodb_flush_method=O_DIRECT

max_heap_table_size = 2G

tmp_table_size=2G

query_cache_size = 2G

query_cache_enabled=1

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