Very slow close of statement [execute SP]
-----------------------------------------
Key: CORE-3982
URL: http://tracker.firebirdsql.org/browse/CORE-3982
Project: Firebird Core
Issue Type: Bug
Components: API / Client Library, Engine
Affects Versions: 2.5.2
Environment: Win7 x64, i7-Q2670QM.
Reporter: Kovalenko Dmitry
Server Version :2.5.3.26543 [Windows, x64, SuperClassic]
Client Version :2.5.3.26543
Database ODS :11.2
Database Dialect:3
---------- [Test stored procedure]
CREATE PROCEDURE SP_PAUSE_FETCH(N INTEGER, PAUSE INTEGER)
RETURNS (ID INTEGER,DUMMY VARCHAR(32000))
AS
DECLARE VARIABLE P INTEGER;
DECLARE VARIABLE S INTEGER;
BEGIN
ID=0;
DUMMY='';
P=0;
WHILE(P<32000)DO
BEGIN
DUMMY=DUMMY||'A';
P=P+1;
END
S=0;
WHILE(S=0)DO
BEGIN
P=0;
WHILE(P<PAUSE) DO P=P+1;
IF(ID<N)THEN
BEGIN
ID=ID+1;
SUSPEND;
END
ELSE
BEGIN
S=1;
END
END
END
---------- [/Test stored procedure]
Scenario of API call
1. begin transaction
2. prepare and execute "select ID,DUMMY from SP_PAUSE_FETCH(1000,10000000)"
3. fetch one row
4. close statement <---- very slow operation.
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