Synchronizing the contents of the control data set

You can synchronize the contents of the DFSMSrmm control data set, TCDB, and the library manager database by using the EDGUTIL utility. First, use the verify function to check for inconsistencies in the contents of the DFSMSrmm control data set with the TCDB and the Library Manager. Then use EDGUTIL to automatically fix the inconsistencies found between the control data set and the TCDB and Library Manager. Table 1 lists the information checked for inconsistencies by EDGUTIL in the CDS, Library Manager, and TCDB.

Table 1. Information checked by EDGUTIL for inconsistencies
Information Checked	DFSMSrmm CDS	Library Manager	TCDB (Volume Catalog)
Category		X
Error category¹		X
Error type¹			X
Library name			X
Location/Destination	X
Media Type	X	X	X
Residency	X	X	X
Status	X
Storage group	X		X
Use attribute			X
1. In order to recover volumes from the error category, DFSMSrmm will change the volume to SCRATCH for volumes found to be in Error Category with any of these volume error statuses: CHECKPT, LNGTHERR, MEDIAMNT, MED2MNT, NOTINLIB, PASSPROT, RACFPROT, TRKCMPAT, and UNEXPIR. These errors are explained in z/OS DFSMS OAM Planning, Installation, and Storage Administration Guide for Tape Libraries.

You can use EDGUTIL VERIFY(SMSTAPE) to check the synchronization of the DFSMSrmm control data set with the TCDB and Library Manager database. Specify EDGUTIL MEND(SMSTAPE) to synchronize the TCDB and the library manager database from the DFSMSrmm control data set. You can run the function against an active control data set because the function does not update the control data set. The function uses the DFSMSrmm control data set as the master and makes changes to the TCDB and library manager database such as status and storage group information.

Specify EDGUTIL MEND(VOLCAT) with DFSMSrmm inactive to update the DFSMSrmm control data set from the TCDB with information such as location, media type, storage group, and in-transit status.