1 exec
update tst set val=val+0
where val >90000

Plan
PLAN (TST INDEX (BY_VAL))

Adapted Plan
PLAN (TST INDEX (BY_VAL))

9999 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 281ms
Current memory = 9236480
Max memory = 9330776
Memory buffers = 2048
Reads from disk to cache = 177
Writes from cache to disk = 3
Fetches from cache = 79529


2 exec

Plan
PLAN (TST INDEX (BY_VAL))

Adapted Plan
PLAN (TST INDEX (BY_VAL))

9999 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 7s 911ms
Current memory = 10217472
Max memory = 10221568
Memory buffers = 2048
Reads from disk to cache = 0
Writes from cache to disk = 4215
Fetches from cache = 173366


3 exec

Plan
PLAN (TST INDEX (BY_VAL))

Adapted Plan
PLAN (TST INDEX (BY_VAL))

9999 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 8s 412ms
Current memory = 10217472
Max memory = 10221568
Memory buffers = 2048
Reads from disk to cache = 0
Writes from cache to disk = 2
Fetches from cache = 104711


4 exec

Plan
PLAN (TST INDEX (BY_VAL))

Adapted Plan
PLAN (TST INDEX (BY_VAL))

9999 record(s) was(were) updated in TST

------ Performance info ------
Prepare time = 0ms
Execute time = 8s 452ms
Current memory = 10217472
Max memory = 10221568
Memory buffers = 2048
Reads from disk to cache = 0
Writes from cache to disk = 2
Fetches from cache = 104711