Berkeley DB Reference Guide: Release 3.1: DB_SYSTEM_MEM
Description: Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++

### Berkeley DB Reference Guide: Upgrading Berkeley DB Applications |

### Release 3.1: DB_SYSTEM_MEM

Using the DB_SYSTEM_MEM option on UNIX systems now requires the specification of a base system memory segment ID, using the DB_ENV->set_shm_key method. Any valid segment ID may be specified, for example, one returned by the UNIX ftok(3) function.

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