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substr( string, start_position, [ length ] )
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substr('This is a test', 6, 2) would return 'is'
substr('This is a test', 6) would return 'is a test'
substr('TechOnTheNet', 1, 4) would return 'Tech'
substr('TechOnTheNet', -3, 3) would return 'Net'
substr('TechOnTheNet', -6, 3) would return 'The'
substr('TechOnTheNet', -8, 2) would return 'On'
select substr('TechOnTheNet', -3, 2) from dual
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public boolean connectDb() {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
return true;
} catch (ClassNotFoundException e) {
System.out.println(e);
return false;
}
}
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oracle wait event:cursor: pin S wait on X
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http://database.ctocio.com.cn/tips/114/8263614_1.shtml
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http://www.itpub.net/viewthread.php?tid=1003340
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