resolve getConnection error

[natehuangting]

Fixes #21133

[FlyingZC]

👍🏻👍🏻👍🏻

[codecov-commenter]

Codecov Report

Merging #21134 (651f547) into master (dbac9a8) will increase coverage by 0.02%. The diff coverage is 74.71%.

@@             Coverage Diff              @@
##             master   #21134      +/-   ##
============================================
+ Coverage     61.63%   61.65%   +0.02%     
  Complexity     2475     2475              
============================================
  Files          4064     4061       -3     
  Lines         55840    55833       -7     
  Branches       9457     9455       -2     
============================================
+ Hits          34416    34423       +7     
+ Misses        18550    18535      -15     
- Partials       2874     2875       +1     

Impacted Files	Coverage Δ
...adbalance/WeightReadQueryLoadBalanceAlgorithm.java	75.51% <0.00%> (+1.51%)	:arrow_up:
...hardingsphere/infra/context/ConnectionContext.java	0.00% <0.00%> (ø)
...driver/jdbc/core/connection/ConnectionManager.java	64.28% <0.00%> (-0.47%)	:arrow_down:
...ception/DataSourceJndiNotFoundServerException.java	0.00% <ø> (ø)
.../shardingsphere/spring/boot/util/PropertyUtil.java	35.93% <0.00%> (-1.16%)	:arrow_down:
...proxy/backend/config/ProxyConfigurationLoader.java	64.44% <0.00%> (+2.74%)	:arrow_up:
...phere/proxy/backend/session/ConnectionSession.java	73.91% <0.00%> (-4.35%)	:arrow_down:
...engauss/command/OpenGaussCommandExecuteEngine.java	20.00% <0.00%> (ø)
...gresql/command/PostgreSQLCommandExecuteEngine.java	60.52% <0.00%> (ø)
...ommand/query/simple/OpenGaussComQueryExecutor.java	61.11% <66.66%> (ø)
... and 20 more

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