BerkeleyDB安裝及配置

安裝過程：

(環境： kubuntu 7.10)

從其oracle公司官網http://www.oracle.com/technology/software/products/berkeley-db/index.html獲得其安裝包,當前版本為4.6.21

#tar zxfv db-4.x.tgz

#cd db-4.x/build_unix

(僅用於unix平台安裝)

#../dist/configure

(主意：

1、如果以gcc和g++編譯的話,須執行#env cc=gcc ccc=g++ ../dist/configure，否則編譯時出現段錯誤

2、預設狀態,berkeleydb的lib和include將被安裝到/usr/local/berkeleydb/下,需要更改這個路徑的話,可以加上選項--prefix,例如:#../dist/configure --prefix=/opt/berkeleydb.)

#make

#make install

#vi /etc/ld.so.conf

(並將berkeleydb的lib路徑加到該檔案的最後一行,這樣才能找到並載入它的庫檔案.ld.so.conf是系統動態鏈結庫的配置檔案.此檔案內,存放著可被linux共享的動態鏈結庫所在目錄的名字(系統目錄/lib,/usr/lib除外),各個目錄名間以空白字元(空格,換行等)或冒號或逗號分隔.)

#ldconfig

(#make uninstall解除安裝)

編譯方法(原始檔為test.c)：

#gcc test.c -ggdb -i/usr/local/berkeleydb.4.6/include/ -l/usr/local/berkeleydb.4.6/lib/ -ldb -lpthread -o test.out

unix系統參考指南：http://www.oracle.com/technology/documentation/berkeley-db/db/ref/build_unix/solaris.html

berkeleydb參考資料：http://www.oracle.com/technology/documentation/berkeley-db/db/ref/toc.html

可使用如下程式測試_______________

#include

//only this head should include for use bdb.

#include

#define database "free.db"

#define dblocat "/home/free/code/cc++/new"

int main()

//........if the environment does not exist create it. initialize the in-memory cache.

env_flags = db_create | db_init_mpool;

//........open the environment.

ret = myenv->open(myenv,dblocat,env_flags,0);

if (ret != 0)

if ((ret = db_create(&dbp, myenv, 0)) != 0)

if ((ret = dbp->open(dbp, null, database, null, db_btree, db_create, 0664)) != 0)

memset(&key, 0, sizeof(key));

memset(&data, 0, sizeof(data)); key.data = "sport";

key.size = sizeof("sport");

data.data = "football";

data.size = sizeof("football");

/*//......put data

if ((ret = dbp->put(dbp, null, &key, &data, 0)) == 0)

else

*///........put data nooverwrite

if ((ret = dbp->put(dbp, null, &key, &data, db_nooverwrite)) == 0)

printf("db: %s: key stored./n", (char *)key.data);

else

dbp->err(dbp, ret, "db->put");

//.......get data

if ((ret = dbp->get(dbp, null, &key, &data, 0)) == 0)

printf("db: %s: key retrieved: data was %s./n", (char *)key.data, (char *)data.data);

else

dbp->err(dbp, ret, "db->get");

//......del data

if((ret = dbp->del(dbp, null, &key, 0)) == 0)

printf("db: %s: key was deleted./n", (char *)key.data);

else

dbp->err(dbp, ret, "db->del");

//.........close, only when the db successful closed,the data can real write to the disk.

//if ((t_ret = dbp->close(dbp, 0)) != 0 && ret == 0)

//ret = t_ret;

//exit(ret);

if (dbp != null)

dbp->close(dbp, 0);

//.........close evn

//........when you are done with an environment, you must close it.

//........before you close an environment, make sure you close any opened databases

if (myenv != null)

myenv->close(myenv, 0);

return 0;

}

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