Synergy DBMS

Synergy DBMS is the file management system for Synergy/DE, enabling you to store and manage your data. Its primary file format is ISAM, which uses a data file index for fast access. Synergy DBMS also supports Synergy relative files, Synergy sequential files, and Synergy stream files. On OpenVMS, Synergy DBMS is implemented with RMS (Record Management Services).

Revision levels and file compatibility

ISAM index density

Data compression

Page size

Change tracking

Resynchronization and resilience

Data file record structure

Keys in ISAM files

File corruption vs. data corruption

Recovering ISAM files after production failures

ISAM limits

Synergy counted files

bldism - Create an ISAM file

chklock - Report file lock information

ctutl - Manipulate change tracking parameters

fcompare - Compare database files to system catalog or repository

fconvert - Convert database files to other file types

ipar - Generate parameter file descriptions

irecovr - Recover ISAM files (Revision 4 or higher)

isload - Load, unload, or clear an ISAM file

ismvfy - Verify structure of an ISAM file (Revision 4 or higher)

isutl - Verify, recover, and optimize ISAM files (Revision 4 or higher)

isutl -b - Manage ISAM file buckets

isutl -c - Clear an ISAM file

isutl -ex - Extend freelist in an ISAM file

isutl -f - Fast-load a sequential file

isutl -i - Launch the information advisor

isutl -p - Patch an ISAM file to another version

isutl -r - Rebuild an ISAM file (Revision 4 or higher)

isutl -s - Check and resynchronize ISAM file if out of sync (Revision 6 or higher)

isutl -v - Verify the integrity of an ISAM file (Revision 4 or higher)

status - Report the status of an ISAM file