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Oracle lock compatibility chart
Lock held
Lock requested
NL
SS
SX
S
SSX
X
NL
yes
yes
yes
yes
yes
yes
SS
yes
yes
yes
yes
yes
no
SX
yes
yes
yes
yes
no
no
S
yes
yes
yes
no
no
no
SSX
yes
yes
no
no
no
no
X
yes
no
no
no
no
no