java - Is OracleDataSource.getConnection thread-safe? -

java - Is OracleDataSource.getConnection thread-safe? -

i thought finding reply easy...but not much.

does know if oracledatasource.getconnection method thread safe?

i not mean connection objects returns, calling of getconnection itself.

specifically, method: http://download.oracle.com/otn_hosted_doc/jdeveloper/905/jdbc-javadoc/oracle/jdbc/pool/oracledatasource.html#getconnection()

the docs , class doesn't explicitly but, beingness how connection pool, i'm inclined believe is.

this problem discussed in java concurrency in practice (brian goetz):

4.5.1. 􀀃interpreting 􀀃vague􀀃 documentation

many􀀃 java􀀃 technology􀀃 specifications􀀃 are􀀃 silent,􀀃 or􀀃 at􀀃 least􀀃 unforthcoming,􀀃 about􀀃 thread􀀃 safety􀀃 guarantees􀀃 and􀀃 requirements􀀃 for􀀃 interfaces􀀃 such􀀃 as􀀃 servletcontext,􀀃 httpsession,􀀃 or􀀃 datasource.

...information servlets...

one􀀃 can􀀃 create 􀀃a 􀀃similar 􀀃inference􀀃 about􀀃 􀀃jdbc􀀃datasource􀀃 interface,􀀃 􀀃represents 􀀃a􀀃 pool 􀀃of 􀀃reusable􀀃 database􀀃 connections.􀀃 a􀀃 datasource􀀃 provides􀀃 service􀀃 to􀀃 an􀀃 application,􀀃 and􀀃 it􀀃 doesn't􀀃 make􀀃 much􀀃 sense􀀃 in􀀃 the􀀃 context􀀃 of􀀃 a􀀃 single threaded 􀀃application. 􀀃it 􀀃is􀀃 hard 􀀃to 􀀃imagine 􀀃a 􀀃use 􀀃case 􀀃that 􀀃doesn't 􀀃involve 􀀃calling 􀀃getconnection 􀀃from􀀃 multiple􀀃 threads. 􀀃and, 􀀃as 􀀃with 􀀃servlets, 􀀃the􀀃 examples 􀀃in 􀀃the 􀀃jdbc􀀃 specification 􀀃do 􀀃not 􀀃suggest 􀀃the 􀀃need 􀀃for 􀀃any 􀀃client side􀀃 locking􀀃 in 􀀃the 􀀃many 􀀃code 􀀃examples 􀀃using 􀀃datasource.􀀃 so, 􀀃even 􀀃though 􀀃the􀀃 specification 􀀃doesn't 􀀃promise􀀃 􀀃datasource􀀃 is􀀃 thread-safe 􀀃or 􀀃require􀀃 container 􀀃vendors 􀀃to 􀀃provide 􀀃a 􀀃thread-safe􀀃 implementation,􀀃 by􀀃 􀀃same 􀀃"it 􀀃would 􀀃be 􀀃absurd 􀀃if 􀀃it􀀃 weren't"􀀃 argument, 􀀃we􀀃 have􀀃 no􀀃 choice􀀃 but􀀃 to􀀃 assume􀀃 that􀀃 datasource.getconnection􀀃 does􀀃 not􀀃 require􀀃 additional􀀃 client-side􀀃 locking.􀀃 ...

java oracle thread-safety